TY - JOUR AU - Anish, M. AU - Bency, P. AU - Jayaprabakar, J. AU - Jayaprakash, V. AU - Rao, P. Shanmukh AU - Phanikumar, K. AU - Kumar, J. Aravind AU - Saravanan, A. AU - Rajasimman, M. TI - Utilization of nano materials in hydrogen production - Emerging technologies and its advancements: An overview JF - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY J2 - INT J HYDROGEN ENERG VL - 52 PY - 2024 SP - 140 EP - 158 PG - 19 SN - 0360-3199 DO - 10.1016/j.ijhydene.2023.05.223 UR - https://m2.mtmt.hu/api/publication/34587745 ID - 34587745 AB - Novel, environmentally friendly, and clean energy sources have been developed in response to increased global energy demand and the associated effects of global warming produced by greenhouse gas emissions from fossil fuels. As a result, the development of renewable and clean energy depends largely on hydrogen as a key component. Even, nanomaterial procured from waste for Hydrogen synthesis can be processed through several biochemical/thermochemical procedures. Variables comprising feedstock characteristics, operation needs and technology availability were examined to support technology choice and system features. Such amendments proceed with costly synthesis and operation strategies, low operating efficiencies, insufficient management along with logistics, as well as lack of operation policies. Perhaps, nanotechnology is now crucial in the creation of nanomaterials for the production of hydrogen as a pertinent origin through renewable energy causatives. Nanomaterials have received a great deal of interest in recent years owing to their unusual mechanical, electrical, electronic, optical, and magnetic properties on their surfaces. These features had a predominant impact on the evolution of production and storage techniques, as well as the difficulties experienced in bringing the product to market. This article provides an overview of the nanomaterials that contributed to hydrogen synthesis, storage, and usage. This article will cover a wide range of issues, including Nanomaterials for Photocatalytic (PC) reactions, anaerobic digestion, hydro thermal gasification, microbial fuel cells, lifespan evaluation, and future research studies.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Ivanova, Dobrina AU - Mladenova, Elisaveta AU - Kaneva, Nina TI - PHOTO-FIXATION OF Ag ONTO TiO2 POWDER FILMS FOR IMPROVED PHOTOCATALYTIC ACTIVITY AND ATOMIC-ABSORPTION DETERMINATION OF RESIDUAL NOBLE METAL IN DYES SOLUTION JF - COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES J2 - CR ACAD BULG SCI VL - 77 PY - 2024 IS - 1 SP - 20 EP - 29 PG - 10 SN - 1310-1331 DO - 10.7546/CRABS.2024.01.03 UR - https://m2.mtmt.hu/api/publication/34587744 ID - 34587744 AB - For the first time, we photo -fixed silver ions (10-2, 10-3, and 10-4 M) onto films prepared from commercial TiO2 powder via ultraviolet illumination. The synthesis process is straightforward and environmentally friendly. The nanostructures are characterized by SEM, XRD, FAAS, and UV/Vis spectroscopy for the photocatalytic properties. The X-ray diffraction pattern demonstrated the phase of the anatase TiO2 structure. Flame Atomic Absorption Spectrometry is used as a simple way to determine the Ag+ content in solutions from the heterogeneous photocatalysis under UV illumination. The research shows that at the end of the degradation process, no silver ions are observed for both dyes - malachite green and methylene blue. The formation of stable intermediates by the reaction of OH with the triarylmethane dye during the photo catalysis resulted in faster degradation of malachite green than methylene blue. In comparison to pure TiO2, the TiO2/Ag films have higher photocatalytic efficiency. The reason is the presence of silver, which leads to a decrease in the recombination of pairs of charges. LA - English DB - MTMT ER - TY - JOUR AU - Kaneva, N. AU - Bojinova, A. AU - Papazova, K. TI - Enhanced Removal of Organic Dyes Using Co-Catalytic Ag-Modified ZnO and TiO2 Sol-Gel Photocatalysts JF - CATALYSTS J2 - CATALYSTS VL - 13 PY - 2023 IS - 2 SN - 2073-4344 DO - 10.3390/catal13020245 UR - https://m2.mtmt.hu/api/publication/33725863 ID - 33725863 N1 - Export Date: 31 March 2023; Cited By: 0; Correspondence Address: N. Kaneva; Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, Sofia, 1 James Bourchier Blvd, 1164, Bulgaria; email: nina_k@abv.bg AB - Zinc oxide and titanium dioxide semiconductor photocatalysts have been widely utilized in the last few decades for water treatment because of their high photocatalytic efficiency. Recently, a lot of researchers have focused on the improvement of the photocatalytic properties of catalysts through modifying and co-modifying them with different metals and nonmetals. These co-catalytic ions improve the photocatalytic activity of ZnO and TiO2 by reducing its energy band gap. This might be useful in wastewater treatment for the photocatalytic degradation of organic contaminants. In this study, we prepared semiconductor films that were surface-modified with Ag co-catalyst layers via the photo-fixation of Ag (I) ions with varied concentrations (10−2–10−4 M) in the water phase under UV illumination for the first time. The photocatalytic behavior was evaluated by the degradation of malachite green and methylene blue under UV and visible light irradiation. The ZnO/Ag and TiO2/Ag samples showed a faster degradation of malachite green compared to methylene blue due to the formation of stable intermediates by the reaction of OH radicals with the triarylmethane dye (C=C bond) during the photocatalysis. The co-catalytic-silver-modified films had a higher photocatalytic efficiency in comparison with the pure nanostructures. The dye photodegradation rate constants increased in the following order: pure films < films modified with Ag, 10−4 M < films modified with Ag10−3 M < films modified with Ag10−2 M. The Ag modification and the heterojunction of the composites contributed to trapping and transfer of the electrons. Therefore, the photogenerated charges had a longer lifetime, resulting in a strengthened photocatalytic ability of the ZnO/Ag and TiO2/Ag films. © 2023 by the authors. LA - English DB - MTMT ER - TY - JOUR AU - Mehra, Sonali AU - Saroha, Jyoti AU - Rani, Ekta AU - Sharma, Vikash AU - Goswami, Lalit AU - Gupta, Govind AU - Srivastava, A. K. AU - Sharma, Shailesh Narain TI - Development of visible light-driven SrTiO3 photocatalysts for the degradation of organic pollutants for waste-water treatment: Contrasting behavior of MB & MO dyes JF - OPTICAL MATERIALS J2 - OPT MATER VL - 136 PY - 2023 PG - 20 SN - 0925-3467 DO - 10.1016/j.optmat.2022.113344 UR - https://m2.mtmt.hu/api/publication/33836739 ID - 33836739 N1 - CSIR – National Physical Laboratory, Dr. KS Krishnan Marg, New Delhi, 110012, India Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India Nano and Molecular Systems Research Unit, University of OuluFin - 90014, Finland CSIR – Advanced Materials and Processes Research Institute, Madhya Pradesh, Bhopal, India Cited By :2 Export Date: 31 May 2023 CODEN: OMATE Correspondence Address: Sharma, S.N.; CSIR – National Physical LaboratoryIndia; email: shailesh@nplindia.org AB - Semiconductor photocatalysts were utilized widely for degrading organic pollutants in water using the advanced, environment-friendly, low-cost, and highly efficient photocatalysis technique. There are various complex energy -consuming techniques used for the refinement of wastewater. However, the photocatalysis process is the cleanest technique used for degrading organic pollutants in wastewater into the water; carbon dioxide, other small molecules, and inorganic pollutants were reduced or oxidized into harmless substances.SrTiO3 nanoparticles (NPs) synthesized by the chemical method are the topic of attention among researchers because of their physical, chemical & photocatalytic properties under sunlight for water purification applica-tions. This paper dealt with the study of The photocatalytic properties of SrTiO3 and its composites under sunlight irradiation. Here, we evaluated the photodegradation of methyl orange (MO) and methylene blue (MB) pollutants using SrTiO3 as a photocatalyst for de-ionized (DI) water and hard water, respectively. Later on, the ex-situ decoration of Ag and Au nanoparticles (NPs) on SrTiO3 NPs results in enhancing the photocatalytic ac-tivity of SrTiO3. This article shows the abnormal behaviour of MO degradation compared to MB dye because there was no degradation of methyl orange for both bare SrTiO3 and Ag, Au@SrTiO3 nanocomposites. However, for bare-SrTiO3, the photocatalytic degradation of MB dye for de-ionized and hard water was accomplished in 210 min and 300 min, respectively. Here, SrTiO3 with MB dye shows enhanced photocatalytic activity for de -ionized water than hard water, and thus we determined the degradation of SrTiO3 nanocomposites with DI water only. While in the case of SrTiO3 nanocomposites, degradation occurred in 210min for Ag and 180 min for Au in DI water which signifies that Au a better co-catalyst for photodegradation. Although, degradation of MO in both DI water and hard water does not show any photocatalytic activity even in 6 and 7 h, respectively, for bare SrTiO3 and its nanocomposites. Therefore, it gives an idea about the different behaviour of dyes in photocatalytic degradation of DI and hard water using bare SrTiO3 and noble metal doped SrTiO3 as photocatalysts for water remediation applications.At a glimpse, this work focus on the photocatalytic removal of various water pollutants using the efficient noble metal (Au & Ag) doped SrTiO3 as a photocatalyst and discusses the properties of those materials and also discuss the prospects for the utilization of those photocatalysts in complex form for the wastewater treatment. LA - English DB - MTMT ER - TY - JOUR AU - Milosevic, Milica AU - Radoicic, Marija AU - Ohara, Satoshi AU - Abe, Hiroya AU - Spasojevic, Jelena AU - Mancic, Lidija AU - Saponjic, Zoran TI - Advanced photocatalysis mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric JF - CELLULOSE J2 - CELLULOSE VL - 30 PY - 2023 IS - 7 SP - 4749 EP - 4771 PG - 23 SN - 0969-0239 DO - 10.1007/s10570-023-05165-0 UR - https://m2.mtmt.hu/api/publication/33854573 ID - 33854573 AB - Novel cotton-based TiO2/Ag/TiO2 nanocomposites for wastewater treatment were developed by fine chemical synthesis path with the goal of coping with wastewater issues and environmental remediation. The photocatalytic performances of nanocomposites were tested during photodegradation processes of RB, AO7 and MR under simulated solar light. Double- and single-loaded nanocomposites were synthesized by a simple bottom-up approach implying in situ photoreduction of Ag+ ions on the surface of TiO2 NPs previously deposited on cotton fibers from colloids. The spherical-like colloidal TiO2 NPs (4.5 nm) and TiO2/Ag NPs (8 nm) and the formation of uniform TiO2/Ag and TiO2/Ag/TiO2 nano-coatings on cotton fibers were examined by TEM and FESEM. The reduction of Ag+ ions on TiO2 surface was undoubtedly proven by the appearance of SPR band of Ag NPs in UV/Vis spectra. Raman spectroscopy clearly confirmed the presence of anatase TiO2 in nanocomposites. Quantitative determination of TiO2 and Ag in nanocomposites was accomplished using EDX and ICP-OES. The cotton-based TiO2/Ag/TiO2 nanocomposite showed the highest photocatalytic efficiency (> 90%) and maintained its removal efficiency after three reuse cycles, indicated its exceptional photochemical ability. The initial idea of improved photocatalytic performances of a TiO2 NPs double-layer with immobilized Ag NPs was justified as the TiO2/Ag/TiO2 processed sample contributed additional binding sites for dye molecules. Considering that the photocatalytic activity of the cotton-based TiO2 and TiO2/Ag samples was practically imperceptible, it can be assumed that the synthesized Ag NPs act predominantly as electron traps in the double-loaded synthesized system. LA - English DB - MTMT ER - TY - JOUR AU - Yang, Tianxi AU - Adhikari, Laxmi AU - Paulose, Teena AU - Bleher, Reiner AU - Duncan, Timothy V. TI - Titanium dioxide and table sugar enhance the leaching of silver out of nanosilver packaging JF - ENVIRONMENTAL SCIENCE-NANO J2 - ENVIRON SCI-NANO VL - 10 PY - 2023 IS - 6 SP - 1689 EP - 1703 PG - 15 SN - 2051-8153 DO - 10.1039/d3en00098b UR - https://m2.mtmt.hu/api/publication/34245940 ID - 34245940 AB - We manufactured laboratory-scale food packages containing 2.57 +/- 0.18 x 10(-3) wt% silver nanoparticles (AgNPs) and used them to show that table sugar (sucrose) and microcrystalline titanium dioxide (mu TiO2) enhance Ag migration from these packages and into aqueous food simulants. Ag migration into purified water was detected but was below the limit of ICP-MS quantitation, giving a range of potential Ag migration between 0.059 and 0.082 ng cm(-2) packaging surface area. Ag migration into 9 wt% aqueous sucrose solution was 0.547 +/- 0.084 ng cm(-2) and migration into 9 wt% sucrose solution containing 0.01 wt% mu TiO2 was 0.724 +/- 0.032 ng cm(-2). Total Ag migration into a 0.01 wt% mu TiO2 aqueous dispersion without sucrose was between 0.122 and 0.162 ng cm(-2), with upper and lower limits defined by the detectability of Ag in the supernatant phase of the simulant. If the midpoint of this range is taken as a baseline, these results imply that, compared to purified water, Ag migration was increased by approximately 10.3 times when the water simulant contained mu TiO2 and sucrose at commercially-relevant concentrations. Notably, the Ag migrated into water containing both ingredients exceeded the total Ag migrated into either of the single-ingredient simulants, pointing to a potential cooperative relationship between sucrose and mu TiO2 that possibly derives from binding and redox interactions between these two ingredients. Sucrose and mu TiO2 also both reduced a portion of migrated Ag+ back into AgNPs, and mu TiO2 particles efficiently captured (>25% by mass) migrated Ag on their surfaces. Similar effects on migration were observed with nanocrystalline TiO2. These experiments are the first to show that TiO2 particles exert a strong influence on the quantity and form of Ag that could migrate from AgNP-enabled packaging, suggesting that food formulations and interactions between individual food components may be important to consider when evaluating the fate of nanoparticles in these consumer applications. LA - English DB - MTMT ER - TY - JOUR AU - AlAbdulaal, Thekrayat AU - AlShadidi, Manal AU - Hussien, Mai AU - Ganesh, Vanga AU - Bouzidi, Abdel-Fatah AU - Rafique, Saqib AU - Algarni, Hamed AU - Zahran, Heba AU - Abdel-wahab, Mohamed AU - Yahia, Ibrahim TI - Multifunctional and smart Er2O3-ZnO nanocomposites for electronic ceramic varistors and visible light degradation of wastewater treatment JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 29 PY - 2022 IS - 13 SP - 19109 EP - 19131 PG - 23 SN - 0944-1344 DO - 10.1007/S11356-021-16754-6 UR - https://m2.mtmt.hu/api/publication/32948696 ID - 32948696 AB - In this proposed study, erbium (Er3+)-doped ZnO nanocomposites were prepared through the effective, basic, and green combustion method. The significant effects of Er dopants on the structural, morphological features, dielectric, and optical behaviors of the pure ZnO matrix as well as Er2O3-ZnO nanostructured materials were investigated applying X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transformation infrared (FT-IR) spectroscopy, and UV-Vis spectrophotometer techniques. These results showed that the synthesized Er2O3-ZnO nanocomposites are well polycrystalline. The Er2O3-ZnO nanocomposites are almost uniformly distributed on the surface morphologies. Furthermore, UV-Vis diffuse reflectance spectroscopy, AC electrical conductivity, and dielectric properties' current-voltage characteristics were utilized to examine the influence of erbium doping on the optical properties, energy bandgaps of the proposed Er2O3-ZnO nanostructured powder. The tested nano-samples were applied for the visible light photodegradation of p-chlorophenol(4-CP) and p-nitrophenol (4-NP). The Er-doped ZnO ratio affects the photocatalytic activity of the ZnO matrix. This current research substantiated that more than 99.5% of 4-CP and 4-NP were photodegraded through 30 min of irradiation. Four times, the Er:ZnO nanocatalysts were used and still displayed an efficiency of more than 96.5% for 4-CP and 4-NP degradations in the specified period of 30 min. The asprepared Er2O3-ZnO nanostructures are considered novel potential candidates in broad nano-applications from visible photocatalytic degradation of waste pollutants to the electronic varistor devices. LA - English DB - MTMT ER - TY - JOUR AU - Garcia-Prieto, Juan C. AU - Gonzalez-Burciaga, Luis A. AU - Proal-Najera, Jose B. AU - Garcia-Roig, Manuel TI - Kinetic Study and Modeling of the Degradation of Aqueous Ammonium/Ammonia Solutions by Heterogeneous Photocatalysis with TiO2 in a UV-C Pilot Photoreactor JF - CATALYSTS J2 - CATALYSTS VL - 12 PY - 2022 IS - 3 PG - 24 SN - 2073-4344 DO - 10.3390/catal12030352 UR - https://m2.mtmt.hu/api/publication/32948694 ID - 32948694 AB - The degradation mechanism of NH4+/NH3 in aqueous solutions by heterogeneous photocatalysis (TiO2/SiO2) and photolysis in UV-C pilot photoreactor has been studied. Under the conditions used, NH4+/NH3 can be decomposed both by photolytically and photocatalytically, without disregarding stripping processes. The greatest degradation is achieved at the highest pH studied (pH 11.0) and at higher lamp irradiation power used (25 W) with degradation performances of 44.1% (photolysis) and 59.7% (photocatalysis). The experimental kinetic data fit well with a two parallel reactions mechanism. A low affinity of ammonia for adsorption and surface reaction on the photocatalytic fiber was observed (coverage not higher than 10%), indicating a low influence of surface phenomena on the reaction rate, the homogeneous phase being predominant over the heterogeneous phase. The proposed reaction mechanism was validated, confirming that it is consistent with the photocatalytic and photolytic formation of nitrogen gas, on the one hand, and the formation of nitrate, on the other hand. At the optimal conditions, the rate constants were k(3) = 0.154 h(-1) for the disappearance of ammonia and k(1) = 3.3 +/- 0.2 10(-5) h(-1) and k(2) = 1.54 +/- 0.07 10(-1) h(-1) for the appearance of nitrate and nitrogen gas, respectively. LA - English DB - MTMT ER - TY - JOUR AU - Jawhari, Ahmed Hussain TI - Novel Nanomaterials for Hydrogen Production and Storage: Evaluating the Futurity of Graphene/Graphene Composites in Hydrogen Energy JF - ENERGIES J2 - ENERGIES VL - 15 PY - 2022 IS - 23 PG - 16 SN - 1996-1073 DO - 10.3390/en15239085 UR - https://m2.mtmt.hu/api/publication/33854574 ID - 33854574 AB - Using hydrogen energy as an alternative renewable source of fuel is no longer an unrealized dream, it now has real-world application. The influence of nanomaterials on various aspects of hydrogen energy, such as hydrogen production, storage, and safety, is considerable. In this review, we present a brief overview of the nanomaterials that have been used as photocatalysts during hydrogen production. The use of nanomaterials and nanomaterial composites for hydrogen storage is also reviewed. The specific use of graphene and its associated nanocomposites, as well as the milestones reached through its application are elaborated. The need to widen the applicability of graphene and its allied forms for hydrogen energy applications is stressed in the future perspectives. Hydrogen energy is our future hope as an alternative renewable fuel, and graphene has the potential to become the future of hydrogen energy generation. LA - English DB - MTMT ER - TY - JOUR AU - Liu, Yinke AU - Li, Rui AU - Yang, Haowei AU - Song, Jiangfeng AU - Hu, Jun AU - Yang, Chengkai AU - Zheng, Zhe TI - In situ modification by graphidyne as interlayer in titanium dioxide thin film / platinum for water splitting photocatalysis JF - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY J2 - INT J HYDROGEN ENERG VL - 47 PY - 2022 IS - 32 SP - 14563 EP - 14569 PG - 7 SN - 0360-3199 DO - 10.1016/j.ijhydene.2022.02.207 UR - https://m2.mtmt.hu/api/publication/32948693 ID - 32948693 AB - Modifying titanium dioxide (TiO2) with graphdiyne (Gry) makes that the absorption range of UV-vis-nIR spectrum expands in visible light area. However, in traditional methods, the two materials are combined by hydrothermal process. In this paper, in-situ synthesis, which monomer directly polymerizes on the surface of TiO2 instead that polymer and TiO2 combined by hydrothermal method, is employed to get hybrid materials. In the process, TiO2 thin film was deposited on the glass slide followed by being enfolded in copper (Cu) foil to initiate polymerization and synthesize Gry on the surface of TiO2 directly. It turns out that with co-catalyst Platinum (Pt) the efficiency of TiO2-Gry with introduction of only 1.9 wt% Gry is 12.6% higher than the efficiency of TiO2 under same test conditions. The improvement is attributed to band structure of the combined material and efficiency of charge transfer. In this system, Gry acts as an excellent medium for charge transfer, which benefits from its intrinsic property and effective contact with TiO2 by this synthesis. The work points out a new way to get well-combined platelike photocatalyst on transparent substrate. It gives a promising prospect for practical photocatalysis in the future that the quantity and mass ratio of combined materials can be recorded and modified. (C)& nbsp;2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Ahmad, Munir AU - Rehman, Wajid AU - Khan, Mohammad Mansoob AU - Qureshi, Muhammad Tauseef AU - Gul, Anadil AU - Haq, Sirajul AU - Ullah, Rizwan AU - Rab, Abdur AU - Menaa, Farid TI - Phytogenic fabrication of ZnO and gold decorated ZnO nanoparticles for photocatalytic degradation of Rhodamine B JF - JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING J2 - J ENVIRON CHEM ENG VL - 9 PY - 2021 IS - 1 PG - 9 SN - 2213-3437 DO - 10.1016/j.jece.2020.104725 UR - https://m2.mtmt.hu/api/publication/32303713 ID - 32303713 AB - Pure Zinc Oxide (ZnO) nanoparticles (NPs) and gold (Au) decorated (Au-ZnO) hetero-nanostructures were synthesized using green-synthesis method employing pecan nuts (Carya illinoinensis) leaves extract as reducing agent. The structural and optical properties studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), High-resolution transmission electron microscopy (HRTEM) and UV-vis spectrophotometer (UV-vis). Structural modification with the introduction of Au in ZnO have been confirmed by the XRD and TEM results. UV data confirmed the decrease in Au-ZnO energy band-gap E-g value, which validates the formation of hetero-structure. The modulation of energy band-gap causes visible light absorption and hence enhances the photodegradation activity of Au-ZnO. Photocatalytic activity was carried-out by degradation of RhB dye under UV light irradiation in aqueous solution. The maximum degradation of 95 % was obtained during the time of 180 min for the basic pH of the dye. The Enhanced degradation in Au-ZnO as compared with bare ZnO NPs, was attributed to Au, which controls the amount of electron and suppress electron-hole ratio at ZnO surface. In the recycling study of the Au-ZnO Photocatalyst, the hetero-structure showed good stability up to five cycles. LA - English DB - MTMT ER - TY - JOUR AU - Fónagy, Orsolya AU - Szabóné Bárdos, Erzsébet AU - Horváth, Ottó TI - 1, 4-Benzoquinone and 1,4-hydroquinone based determination of electron and superoxide radical formed in heterogeneous photocatalytic systems JF - JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY J2 - J PHOTOCH PHOTOBIO A VL - 407 PY - 2021 SP - 113057 SN - 1010-6030 DO - 10.1016/j.jphotochem.2020.113057 UR - https://m2.mtmt.hu/api/publication/31881475 ID - 31881475 N1 - Cited By :3 Export Date: 26 May 2021 LA - English DB - MTMT ER - TY - JOUR AU - Saqib, Najm Us AU - Adnan, Rohana AU - Shah, Irfan TI - Impact of Silver Ions Doping and Calcination on the Physicochemical Characteristics of TiO2 Nanoparticles with Photocatalytic and Regeneration Potential JF - IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION J2 - IRAN J CHEM CHEM ENG VL - 40 PY - 2021 IS - 4 SP - 1012 EP - 1022 PG - 11 SN - 1021-9986 DO - 10.30492/IJCCE.2020.40343 UR - https://m2.mtmt.hu/api/publication/32948695 ID - 32948695 AB - Visible light-driven Ag doped TiO2 photocatalysts were successfully prepared with modified low-cost Liquid Impregnation (LI) method yielding up to 95 % product. The native and newly synthesized photocatalysts were calcined at various temperatures and characterized using diffused reflectance spectroscopy (UV/Vis-DRS), XRD, XPS, TEM EDX, XRF, and pH(PZC) analyses. The XRD results for all samples revealed that the anatase phase was dominant at all calcination temperatures. The Ag+ doping reduced the bandgap energy to 2.88 eV, which significantly enhanced the photocatalytic efficiency towards Methylene Blue (MB) under compact fluorescent light. The photocatalytic efficacy of the nano-catalysts was also tested using a binary solution containing a model dye (MB) and Cd2+ under ordinary compact fluorescent light. The presence of competitive ions i.e. Cd(2+ )increased the MB degradation up to 4 folds under the ambient conditions whereby the maximum amount of MB adsorbed by nano-catalysts reached 46 mg/g. The high-temperature combustion method was found more effective for the regeneration of TiO2 photocatalysts compared to the chemical regeneration. The reusable character of the regenerated samples posed a significant impact on the current work to be applied in wastewater treatment in bulk. LA - English DB - MTMT ER - TY - JOUR AU - Wafi, Abdul AU - Szabóné Bárdos, Erzsébet AU - Horváth, Ottó AU - Kristófné Makó, Éva AU - Jakab, Miklós AU - Zsirka, Balázs TI - Coumarin-based quantification of hydroxyl radicals and other reactive species generated on excited nitrogen-doped TiO2 JF - JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY J2 - J PHOTOCH PHOTOBIO A VL - 404 PY - 2021 SN - 1010-6030 DO - 10.1016/j.jphotochem.2020.112913 UR - https://m2.mtmt.hu/api/publication/31639544 ID - 31639544 N1 - Department of General and Inorganic Chemistry, Center for Natural Sciences, University of Pannonia, Veszprém, POB. 1158, Hungary Department of Materials Engineering, Research Center for Engineering Sciences, University of Pannonia, Veszprém, POB. 1158, Hungary Laboratory for Surfaces and Nanostructures, Research Center for Biochemical, Environmental and Chemical Engineering, University of Pannonia, H-8210, Veszprém, POB. 1158, Hungary Laboratory of Pharmaceutical Chemistry, Department of Pharmacy, Universitas Islam Negeri Maulana Malik Ibrahim Malang, Malang, 65144, Indonesia Cited By :11 Export Date: 18 November 2022 CODEN: JPPCE Correspondence Address: Horváth, O.; Department of General and Inorganic Chemistry, P. O. Box 1158, Hungary; email: horvath.otto@mk.uni-pannon.hu LA - English DB - MTMT ER - TY - JOUR AU - Deshpande, B. D. AU - Agrawal, P. S. AU - Yenkie, M. K. N. TI - Nanoparticles aided AOP for degradation of p-nitro benzoic acid JF - MATERIALS TODAY: PROCEEDINGS J2 - MATER TOD PROC VL - 32 PY - 2020 SP - 519 EP - 523 PG - 5 SN - 2214-7853 DO - 10.1016/j.matpr.2020.02.924 UR - https://m2.mtmt.hu/api/publication/31707530 ID - 31707530 AB - Present study emphasis on photo assisted oxidation of p-nitro benzoic acid using hydrogen peroxide as strong oxidizing agent and heterocatalytic iron nanoparticles synthesised by hydrothermal mode. The powder nano-samples were characterized by X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and Energy dispersive analysis of X-rays (EDAX). Rate of degradation was studied at varying conditions. The percentage degradation of p NBA using goethite (alpha-FeOOH) and hematite (alpha-Fe2O3) was 70.54% and 85.5% with the nano concentration 0.07 g respectively using visible light. Hence, hydrothermal mode of nano synthesis at elevated temperature can be a better option for photocatalytic degradation of organic pollute using visible light. (C) 2019 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the Innovative Advancement in Engineering & Technology. LA - English DB - MTMT ER - TY - JOUR AU - Naeem-ur-Rehman, null AU - Mehmood, Mazhar AU - Ali, Syed Mansoor AU - Ramay, Shahid M. AU - Alkhuraiji, Turki S. TI - Au/ZnO hybrid nanocomposites and their optical and photocatalytic properties JF - APPLIED PHYSICS A - MATERIALS SCIENCE AND PROCESSING J2 - APPL PHYS A-MATER VL - 126 PY - 2020 IS - 9 PG - 14 SN - 0947-8396 DO - 10.1007/s00339-020-03909-4 UR - https://m2.mtmt.hu/api/publication/31707531 ID - 31707531 AB - Au decorated zinc oxide nanorods have been synthesized by adopting a multistep chemical method. Initially the surface of synthesized nanorods have been functionalized by dipping the sample in potassium iodide solution and then Au nanoparticles were decorated on these rods by subsequent dipping in HAuCl(4)solution. The size of Au particles and covering of ZnO nanorods by these particles were studied as a function of reaction time in the HAuCl(4)solution. The photoluminescence spectra exhibit two emission bands at 371 and 575 that corresponds to the band edge emission and defect related emissions, respectively. The photocatalytic activity of the nanostructures that are prepared on the substrate has been tested for degradation of RhB by the illumination of ultra violet light on the nanostructures produced by commercially available lower power UV lamp. LA - English DB - MTMT ER - TY - JOUR AU - Shyamala, Ramakrishnappa AU - Devi, Lakshmipathi Naik Gomathi TI - Surface plasmon resonance effect of Ag metallized SnO2 particles: Exploration of metal induced gap states and characteristic properties of Ohmic junction JF - SURFACE AND INTERFACE ANALYSIS J2 - SURF INTERFACE ANAL VL - 52 PY - 2020 IS - 6 SP - 374 EP - 385 PG - 12 SN - 0142-2421 DO - 10.1002/sia.6745 UR - https://m2.mtmt.hu/api/publication/31437918 ID - 31437918 AB - Ag metallization on the surface of SnO2 catalyst was performed by the photoreduction method, and its presence was confirmed by the (111), (200), (220), and (311) hkl planes of Ag metal by powder X-ray diffraction technique. Further lattice parameters "a" and "c" of the SnO2 tetragonal unit cell show prominent changes on metallization. Ultraiolet-visible absorption spectrum of Ag-SnO2 shows the extended adsorption in the visible region up to almost 565 nm due to the surface plasmon resonance (SPR) effect. Percentage composition of the elements present in the SnO2 and Ag-SnO2 samples were confirmed by the energy-dispersive X-ray analysis and the inductively coupled plasma-atomic emission spectroscopic analysis techniques, and the spherical morphology of these samples were confirmed by the scanning electron microscopy. The photoluminescence technique confirms the reduction of recombination of photogenerated charge carriers by 44% in the case of Ag-SnO2. The metal-metal oxide contact was found to be Ohmic rather than Schottky. The higher activity of the Ag-SnO2 nanoparticles are correlated to the SPR effect, metal-induced gap states, inherently created structural defects, the ability of Sn to show multiple oxidation states, variation in the surface oxygen concentration, and also to the Ohmic junction. Synergistic effect between electronic/intrinsic defect energy levels of Ag-SnO2 photocatalyst with the redox potential of the fast red dye leads to the higher quantum efficiency. LA - English DB - MTMT ER - TY - JOUR AU - Ahmad, Irshad TI - Inexpensive and quick photocatalytic activity of rare earth (Er, Yb) co-doped ZnO nanoparticles for degradation of methyl orange dye JF - SEPARATION AND PURIFICATION TECHNOLOGY J2 - SEP PURIF TECHNOL VL - 227 PY - 2019 PG - 11 SN - 1383-5866 DO - 10.1016/j.seppur.2019.115726 UR - https://m2.mtmt.hu/api/publication/31105792 ID - 31105792 AB - The present work provides an eco friendly rout to synthesize erbium and ytterbium co-doped ZnO (EYZO) photocatalysts by combustion method followed by calcinations at 700 degrees C for 3 h and then characterized by different techniques (XRD, EDS, SEM, XPS, FTIR, UV Vis DRS, PL, CV and BET surface area). XRD confirm the formation of hexagonal wurtzite phase of ZnO. Further, doping of Er and Yb in to ZnO lattice was evidenced by shift of XRD planes towards lower 2 theta values. The addition of Er and Yb introduces significant changes in light absorption characteristics with important absorbance in visible region due to Er and Yb role as acceptor to increase charge separation. UV Vis DRS shows red shift of ZnO band gap from 3.23 eV to 3.16 eV due to Er and Dy doping. All synthesized photocatalysts were tested in photocatalytic degradation of methyl orange (MO) under visible light irradiation. It was observed an increase of photocatalytic MO degradation under visible light irradiation with enhance of Er and Yb co-doping content for ZnO. In particular, EYZO with maximum Er and Yb content allowed obtaining the almost complete MO degradation only in 90 min under visible light irradiation. In addition, the impact of various operational factors on the photo-degradation of MO was studied and explained. Moreover, a feasible catalytic process for photo-degradation of MO over EYZO photocatalysts is suggested and participation of hydroxyl radicals as reactive species is explained by radical trapping analysis. LA - English DB - MTMT ER - TY - JOUR AU - Avid, Sara Parsaei TI - Tech Note: Removal of Heavy Metals by Photocatalyst JF - INGENIERIA UC J2 - ING UC VL - 26 PY - 2019 IS - 3 SP - 378 EP - 385 PG - 8 SN - 1316-6832 UR - https://m2.mtmt.hu/api/publication/31573391 ID - 31573391 AB - In this paper, a removal cations method is analysed by photocatalysis and is studied the influence of different factors for silver removal. This work shows the effect of various parameters on the removal reaction. In that sense, increasing of compound such as alcohol is one of the most important and effective characteristics that could be affect directly on photocatalyst mechanism and this has relation with the properties of photocatalyst, that could produced a hole-electron in chemical reaction, and this is vinculated with a change in the efficiency of reaction. LA - English DB - MTMT ER - TY - CHAP AU - Merenda, Andrea AU - Kong, Lingxue AU - Zhu, Bo AU - Duke, Mikel C. AU - Gray, Stephen R. AU - Dumee, Ludovic F. ED - Hussain, S ED - Natarajan, A ED - Philip, L ED - Griffin, G ED - Shu, L ED - Pannirselvam, M TI - Functional Nanoporous Titanium Dioxide for Separation Applications: Synthesis Routes and Properties to Performance Analysis T2 - WATER SCARCITY AND WAYS TO REDUCE THE IMPACT: MANAGEMENT STRATEGIES AND TECHNOLOGIES FOR ZERO LIQUID DISCHARGE AND FUTURE SMART CITIES PB - Springer Netherlands CY - Cham (Németország) PY - 2019 SP - 151 EP - 186 PG - 36 DO - 10.1007/978-3-319-75199-3_9 UR - https://m2.mtmt.hu/api/publication/30480738 ID - 30480738 AB - Titanium dioxide represents an attractive industrial material for a wide range of applications, however in the last decades, research has been focused on its implementation in remediation systems for water treatment. The need to design nanoporous and nanotextured titania materials has arisen from the unique, beneficial properties of nanoscale titania for catalysis, separation and membrane sieving. This chapter reviews the synthesis procedures to generate tuneable titania materials either as self-supporting structures or as active layers on top of other porous materials. Finally, the catalytic properties of nanoporous and nanostructured TiO2 are reviewed for the degradation of organic compounds in wastewater. Significant parameters, such as specific surface area and crystallite size, are shown to be critical and must be optimised towards the fabrication of catalytic reactors for Advanced Oxidation Processes (AOP). LA - English DB - MTMT ER - TY - JOUR AU - Sharma, Shuchi AU - Gulabani, Ashish AU - Gautam, Sneha TI - Photocatalytic degradation in silver doped TiO2 JF - SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES J2 - SADHANA-ACAD P ENG S VL - 44 PY - 2019 IS - 9 PG - 6 SN - 0256-2499 DO - 10.1007/s12046-019-1191-0 UR - https://m2.mtmt.hu/api/publication/31105791 ID - 31105791 AB - Many intriguing ways have been identified to mitigate the low photocatalytic activity of Titanium dioxide (TiO2). One of the ways is to adulterate the structure of TiO2 with foreign substances like metals i.e., Ni2+, Zn2+, Cr3+ and Fe3+, which are having similar radii with Ti4+. In this study, the introduction of silver into the structure of TiO2 by Liquid Impregnation (LI) method with various mole fractions have been presented. Comparison has been made to degrade one model pollutant: Direct Blue 71 (DB71) by using both doped and undoped TiO2. Study was further supported by studying the Langmuir and Freundlich isotherms. Enhancement in the photocatalytic degradation of the dye was observed with silver doped TiO2 at 2.0% mole fraction as compared to undoped TiO2. While studying the photoctalytic activity, the reaction mixture pH was kept unchanged with doped TiO2, wherein with undoped TiO2 demanded acidic pH to have more photocatalytic activity. LA - English DB - MTMT ER - TY - JOUR AU - Sutka, Andris AU - Jarvekulg, Martin AU - Gross, Karlis A. TI - Photocatalytic Nanoheterostructures and Chemically Bonded Junctions Made by Solution-Based Approaches JF - CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES J2 - CRIT REV SOLID STATE VL - 44 PY - 2019 IS - 3 SP - 239 EP - 263 PG - 25 SN - 1040-8436 DO - 10.1080/10408436.2018.1485549 UR - https://m2.mtmt.hu/api/publication/31105793 ID - 31105793 AB - While single compound semiconductors were initially used for photocatalysis, combining two compounds to form a heterojunction significantly increases the photocatalysis performance. This review will outline how heterojunctions are superior, explain the different heterostructure architectures assembled from nanoparticles, and discuss the importance of achieving a large and quality contact in the junction, the heterojunction. Reference is made to methods for increasing the charge carrier performance and reducing recombination. Solution-based synthesis approaches, have been selected as the preferred route of manufacture, for the low cost scalability, and ability to combine a larger number of compounds. The main objective of this review article is to provide insight to the range of chemical solution-based methods for forming chemically bonded junction in nanoheterostructures for photocatalysis. Methods include chemical precipitation, impregnation, chemical bath deposition, hot injection, solvothermal, photo-deposition, electrochemical deposition, cation exchange and linker assisted assembly. The synthesis of different photocatalysts is addressed for each synthesis method. Solution synthesis is offered for coupling oxide semiconductors (i.e. TiO2, ZnO, WO3, Fe2O3, BiVO4) with other oxides or metal chalcogenide quantum dots or metallic plasmonic nanoparticles. LA - English DB - MTMT ER - TY - JOUR AU - Fónagy, Orsolya AU - Szabóné Bárdos, Erzsébet AU - Horváth, Ottó AU - Kiss, Gyula TI - Application of ozonation and silveration for heterogeneous photocatalytic degradation of an aromatic surfactant JF - JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY J2 - J PHOTOCH PHOTOBIO A VL - 366 PY - 2018 SP - 152 EP - 161 PG - 10 SN - 1010-6030 DO - 10.1016/j.jphotochem.2018.04.054 UR - https://m2.mtmt.hu/api/publication/3369853 ID - 3369853 AB - Abstract The efficiency of TiO2 based heterogeneous photocatalysis can be enhanced by its combination with other oxidative procedures such as ozonation and by the modification of the catalyst surface with noble metals (such as silver). In this work, degradation of 4-hydroxybenzenesulfonic acid (4-HBS, a key intermediate of the decomposition of benzenesulfonic acid) was thoroughly studied by application of the above mentioned procedures individually and also in various combinations. Detailed comparisons of these methods were realized by measurements of degradation and mineralization of 4-HBS as well as determination of characteristic hydroxy intermediates and sulfate ions. The degradation efficiency of combination of Ag-TiO2 based photocatalysis and ozonation was just about the sum of the efficiencies of the individual procedures, while mineralization efficacy of this combination, however, proved to be highly synergic, considerably exceeding this feature of the air- Ag-TiO2 system, due to the increased rate of ozone decay producing ring-opening radicals. Accordingly, total mineralization of 4-HBS was realized under these conditions. Ozonation, however, caused an oxidative dissolution of the deposited silver from the surface of the catalyst. Even so, simultaneous application of Ag-TiO2 based heterogeneous photocatalysis and ozonation led to total mineralization faster than their consecutive combination did. LA - English DB - MTMT ER - TY - CHAP AU - Kumar, A AU - Sadhu, SD AU - Singh, R ED - Chaundhery, Mustansar Hussain ED - Ajay, Kumar Mishra TI - Nanotechnology. Key for Sustainable Future TS - Key for Sustainable Future T2 - Nanotechnology in Environmental Science PB - John Wiley & Sons PB - John Wiley & Sons PY - 2018 SP - 759 EP - 804 PG - 46 UR - https://m2.mtmt.hu/api/publication/27362763 ID - 27362763 LA - English DB - MTMT ER - TY - CHAP AU - Marquez, O AU - Márquez, J ED - Sergio, Gonzales-Cortez ED - Freddy, Emilio Imbert TI - Synthesis of Electrocatalysts for Electrochemistry in Energy T2 - Advanced Solid Catalysts for Renewable Energy Production PB - IGI Global T3 - Advances in Chemical and Materials Engineering, ISSN 2327-5448 PB - IGI Global PY - 2018 SP - 300 EP - 385 PG - 86 UR - https://m2.mtmt.hu/api/publication/27248196 ID - 27248196 LA - English DB - MTMT ER - TY - JOUR AU - Ravindranath, Rini AU - Periasamy, Arun Prakash AU - Roy, Prathik AU - Chen, Yu-Wen AU - Chang, Huan-Tsung TI - Smart app-based on-field colorimetric quantification of mercury via analyte-induced enhancement of the photocatalytic activity of TiO2-Au nanospheres JF - ANALYTICAL AND BIOANALYTICAL CHEMISTRY J2 - ANAL BIOANAL CHEM VL - 410 PY - 2018 IS - 18 SP - 4555 EP - 4564 PG - 10 SN - 1618-2642 DO - 10.1007/s00216-018-1114-7 UR - https://m2.mtmt.hu/api/publication/27603407 ID - 27603407 LA - English DB - MTMT ER - TY - JOUR AU - Senthilraja, A AU - Krishnakumar, B AU - Hariharan, R AU - Sobral, AJ AU - Surya, C AU - John, NAA AU - Shanthi, M TI - Synthesis and characterization of bimetallic nanocomposite and its photocatalytic, antifungal and antibacterial activity JF - SEPARATION AND PURIFICATION TECHNOLOGY J2 - SEP PURIF TECHNOL VL - 202 PY - 2018 IS - 31 August SP - 373 EP - 384 PG - 12 SN - 1383-5866 DO - 10.1016/j.seppur.2018.04.015 UR - https://m2.mtmt.hu/api/publication/27362709 ID - 27362709 LA - English DB - MTMT ER - TY - JOUR AU - Bhatt, MD AU - Lee, JS TI - Nanomaterials for photocatalytic hydrogen production: from theoretical perspectives JF - RSC ADVANCES J2 - RSC ADV VL - 7 PY - 2017 IS - 55 SP - 34875 EP - 34885 PG - 11 SN - 2046-2069 DO - 10.1039/c7ra03435k UR - https://m2.mtmt.hu/api/publication/27232595 ID - 27232595 LA - English DB - MTMT ER - TY - JOUR AU - Devi, LG AU - Nithya, PM AU - Abraham, C AU - Kavitha, R TI - Influence of surface metallic silver deposit and surface fluorination on the photocatalytic activity of rutile TiO2 for the degradation of crystal violet a cationic dye under UV light irradiation JF - MATERIALS TODAY COMMUNICATIONS J2 - MATER TODAY COMMUN VL - 10 PY - 2017 SP - 1 EP - 13 PG - 14 SN - 2352-4928 UR - https://m2.mtmt.hu/api/publication/27248187 ID - 27248187 LA - English DB - MTMT ER - TY - CHAP AU - Liu, XS TI - Inorganic photochemical synthesis (chapter 6) T2 - Modern Inorganic Synthetic Chemistry (second edition) PB - Elsevier PB - Elsevier PY - 2017 SP - 143 EP - 165 PG - 23 UR - https://m2.mtmt.hu/api/publication/27248193 ID - 27248193 LA - English DB - MTMT ER - TY - JOUR AU - Fónagy, Orsolya AU - Hegedűs, Péter AU - Szabóné Bárdos, Erzsébet AU - Dobrádi, Annamária AU - Horváth, Ottó TI - IMPROVEMENT POSSIBILITIES OF HETEROGENEOUS PHOTOCATALYSIS WITH THE AIM OF IN-FIELD USE JF - HUNGARIAN JOURNAL OF INDUSTRY AND CHEMISTRY J2 - HUNG J IND CHEM VL - 45 PY - 2017 IS - 1 SP - 37 EP - 48 PG - 12 SN - 0133-0276 DO - 10.1515/hjic-2017-0007 UR - https://m2.mtmt.hu/api/publication/3415467 ID - 3415467 LA - English DB - MTMT ER - TY - JOUR AU - Radhakrishnan, B AU - Thirumarimurugan, M AU - Azarudeen, R TI - Recent Developments on Photocatalytic water Splitting using Semiconductors for Hydrogen Production JF - International Journal of Advance Research, Ideas and Innovation in Technology J2 - International Journal of Advance Research, Ideas and Innovation in Technology VL - 3 PY - 2017 IS - 6 SP - 1265 EP - 1270 PG - 6 UR - https://m2.mtmt.hu/api/publication/27248197 ID - 27248197 LA - English DB - MTMT ER - TY - JOUR AU - Saqib, Najm Us AU - Adnan, Rohana AU - Shah, Irfan TI - Modifications of pure and Ag doped TiO2 by pre-sulphated and calcination temperature treatments JF - RESEARCH ON CHEMICAL INTERMEDIATES J2 - RES CHEM INTERMEDIAT VL - 43 PY - 2017 IS - 11 SP - 6571 EP - 6588 PG - 18 SN - 0922-6168 DO - 10.1007/s11164-017-3005-5 UR - https://m2.mtmt.hu/api/publication/27107194 ID - 27107194 LA - English DB - MTMT ER - TY - JOUR AU - Thakur, Samriti AU - Kaur, Kirandeep AU - Das, Niranjan AU - Pal, Bonamali TI - Photo-oxidation kinetics of sugars having different molecular size and glycosidic linkages for their complete mineralization to subunits by bare/Ag-TiO2 under UV irradiation JF - JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS J2 - J TAIWAN INST CHEM E VL - 80 PY - 2017 SP - 488 EP - 494 PG - 7 SN - 1876-1070 DO - 10.1016/j.jtice.2017.08.010 UR - https://m2.mtmt.hu/api/publication/27107193 ID - 27107193 LA - English DB - MTMT ER - TY - JOUR AU - Tseng, Kuo-Hsiung AU - Chung, Meng-Yun AU - Chang, Chaur-Yang AU - Cheng, Ting-Shou TI - A Study of Photocatalysis of Methylene Blue of TiO2 Fabricated by Electric Spark Discharge Method JF - JOURNAL OF NANOMATERIALS J2 - J NANOMATER PY - 2017 PG - 8 SN - 1687-4110 DO - 10.1155/2017/9346201 UR - https://m2.mtmt.hu/api/publication/26942960 ID - 26942960 LA - English DB - MTMT ER - TY - JOUR AU - Zhou, Rui AU - Lin, Shengdong AU - Zong, Huixin AU - Huang, Tingting AU - Li, Fengping AU - Pan, Jiahong AU - Cui, Jingqin TI - Continuous Synthesis of Ag/TiO2 Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation JF - JOURNAL OF NANOMATERIALS J2 - J NANOMATER PY - 2017 PG - 9 SN - 1687-4110 DO - 10.1155/2017/4604159 UR - https://m2.mtmt.hu/api/publication/27107195 ID - 27107195 LA - English DB - MTMT ER - TY - JOUR AU - Cui, Entian AU - Hou, Guihua AU - Shao, Rong AU - Guan, Rongfeng TI - Facet-Dependent Activity of Pt Nanoparticles as Cocatalyst on TiO2 Photocatalyst for Dye-Sensitized Visible-Light Hydrogen Generation JF - JOURNAL OF NANOMATERIALS J2 - J NANOMATER PY - 2016 PG - 7 SN - 1687-4110 DO - 10.1155/2016/3469393 UR - https://m2.mtmt.hu/api/publication/26003161 ID - 26003161 LA - English DB - MTMT ER - TY - JOUR AU - Devi, LG AU - Kavitha, R TI - A review on plasmonic metal-TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a Photocatalytic system JF - APPLIED SURFACE SCIENCE J2 - APPL SURF SCI VL - 360 PY - 2016 SP - 601 EP - 622 PG - 22 SN - 0169-4332 UR - https://m2.mtmt.hu/api/publication/27248161 ID - 27248161 LA - English DB - MTMT ER - TY - JOUR AU - Dhatshanamurthi, P AU - Shanthi, M TI - Li and Ag Co-Doped ZnO Photocatalyst for Degradation of RO 4 Dye Under Solar Light Irradiation JF - JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY J2 - J NANOSCI NANOTECHNO VL - 16 PY - 2016 IS - 6 SP - 5913 EP - 5922 PG - 10 SN - 1533-4880 DO - 10.1166/jnn.2016.10907 UR - https://m2.mtmt.hu/api/publication/26193321 ID - 26193321 LA - English DB - MTMT ER - TY - JOUR AU - Jabbari, Vahid AU - Hamadanian, Masood AU - Karimzadeh, Sajad AU - Villagran, Dino TI - Enhanced charge carrier efficiency and solar light-induced photocatalytic activity of TiO2 nanoparticles through doping of silver nanoclusters and C-N-S nonmetals JF - JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J2 - J IND ENG CHEM VL - 35 PY - 2016 SP - 132 EP - 139 PG - 8 SN - 1226-086X DO - 10.1016/j.jiec.2015.12.026 UR - https://m2.mtmt.hu/api/publication/25687683 ID - 25687683 LA - English DB - MTMT ER - TY - JOUR AU - Kuo, DH AU - Hsu, WT AU - Yang, YY TI - From the fluorescent lamp-induced bactericidal performance of sputtered Ag/TiO 2 films to re-explore the photocatalytic mechanism JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 184 PY - 2016 SP - 191 EP - 200 PG - 10 SN - 0926-3373 UR - https://m2.mtmt.hu/api/publication/27248165 ID - 27248165 LA - English DB - MTMT ER - TY - JOUR AU - Moneim, Shimaa M Abdel AU - Gad-Allah, Tarek A AU - El-Shahat, M F AU - Ashmawy, Azza M AU - Ibrahim, Hanan S TI - Novel application of metal-free graphitic carbon nitride (g-C3N4) in photocatalytic reduction-Recovery of silver ions JF - JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING J2 - J ENVIRON CHEM ENG VL - 4 PY - 2016 IS - 4 SP - 4165 EP - 4172 PG - 8 SN - 2213-3437 DO - 10.1016/j.jece.2016.08.034 UR - https://m2.mtmt.hu/api/publication/26369108 ID - 26369108 LA - English DB - MTMT ER - TY - JOUR AU - Rakibuddin, M AU - Ananthakrishnan, R TI - Novel Ag deposited Nano Coordination Polymers Derived Porous SnO 2/NiO Heteronanostructure for Enhanced Photocatalytic Reduction of Cr (VI) under Visible Light JF - NEW JOURNAL OF CHEMISTRY J2 - NEW J CHEM VL - 40 PY - 2016 SP - 3385 EP - 3394 PG - 10 SN - 1144-0546 UR - https://m2.mtmt.hu/api/publication/27248168 ID - 27248168 LA - English DB - MTMT ER - TY - JOUR AU - Vaithiyanathan, R TI - Photocatalytic Decolourization of Reactive Dyes Using Silver Incorporated Titania Catalyst JF - MATERIALS TODAY: PROCEEDINGS J2 - MATER TOD PROC VL - 3 PY - 2016 IS - 10 SP - 4226 EP - 4231 PG - 6 SN - 2214-7853 UR - https://m2.mtmt.hu/api/publication/27248184 ID - 27248184 LA - English DB - MTMT ER - TY - JOUR AU - Zhang, P AU - Li, X AU - Wu, X AU - Zhao, T AU - Wen, L TI - Influence of In 3+-doping and Ag 0-depositing on the visible-light-induced photocatalytic activity of TiO2 JF - JOURNAL OF ALLOYS AND COMPOUNDS J2 - J ALLOY COMPD VL - 673 PY - 2016 IS - 15 July SP - 405 EP - 410 PG - 6 SN - 0925-8388 UR - https://m2.mtmt.hu/api/publication/27248172 ID - 27248172 LA - English DB - MTMT ER - TY - JOUR AU - Chamjangali, M Arab AU - Bagherian, G AU - Bahramian, B AU - Rad, B Fahimi TI - Synthesis and application of multiple rods gold-zinc oxide nanostructures in the photocatalytic degradation of methyl orange JF - INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY J2 - INT J ENVIRON SCI TE VL - 12 PY - 2015 IS - 1 SP - 151 EP - 160 PG - 10 SN - 1735-1472 DO - 10.1007/s13762-014-0669-x UR - https://m2.mtmt.hu/api/publication/25687689 ID - 25687689 LA - English DB - MTMT ER - TY - JOUR AU - De los, Santos Desire M AU - Navas, Javier AU - Aguilar, Teresa AU - Sanchez-Coronilla, Antonio AU - Fernandez-Lorenzo, Concha AU - Alcantara, Rodrigo AU - Carlos, Pinero Jose AU - Blanco, Ginesa AU - Martin-Calleja, Joaquin TI - Tm-doped TiO2 and Tm2Ti2O7 pyrochlore nanoparticles: enhancing the photocatalytic activity of rutile with a pyrochlore phase JF - BEILSTEIN JOURNAL OF NANOTECHNOLOGY J2 - BEILSTEIN J NANOTECH VL - 6 PY - 2015 SP - 605 EP - 616 PG - 12 SN - 2190-4286 DO - 10.3762/bjnano.6.62 UR - https://m2.mtmt.hu/api/publication/25687687 ID - 25687687 LA - English DB - MTMT ER - TY - JOUR AU - Devi, LG AU - Kavitha, R AU - Nagaraj, B TI - Bulk and surface modification of TiO 2 with sulfur and silver. Synergetic effects of dual surface modification in the enhancement of photocatalytic activity TS - Synergetic effects of dual surface modification in the enhancement of photocatalytic activity JF - MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING J2 - MAT SCI SEMICON PROC VL - 40 PY - 2015 SP - 832 EP - 839 PG - 8 SN - 1369-8001 UR - https://m2.mtmt.hu/api/publication/27248185 ID - 27248185 LA - English DB - MTMT ER - TY - JOUR AU - Elsellami, Leila AU - Lachheb, Hinda AU - Houas, Ammar TI - Synthesis, characterization and photocatalytic activity of Li-, Cd-, and La-doped TiO2 JF - MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING J2 - MAT SCI SEMICON PROC VL - 36 PY - 2015 SP - 103 EP - 114 PG - 12 SN - 1369-8001 DO - 10.1016/j.mssp.2015.03.032 UR - https://m2.mtmt.hu/api/publication/25687685 ID - 25687685 LA - English DB - MTMT ER - TY - JOUR AU - Khan, S Sudheer TI - Enhancement of visible light photocatalytic activity of CdO modified ZnO nanohybrid particles JF - JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY J2 - J PHOTOCH PHOTOBIO B VL - 142 PY - 2015 SP - 1 EP - 7 PG - 7 SN - 1011-1344 DO - 10.1016/j.jphotobiol.2014.11.001 UR - https://m2.mtmt.hu/api/publication/25687690 ID - 25687690 LA - English DB - MTMT ER - TY - JOUR AU - Lee, Jong-Ho AU - Kim, In-Ki AU - Cho, Donghwan AU - Youn, Jeong-Il AU - Kim, Young-Jig AU - Oh, Han-Jun TI - Photocatalytic performance of graphene/Ag/TiO2 hybrid nanocomposites JF - CARBON LETTERS J2 - CARBON LETT VL - 16 PY - 2015 IS - 4 SP - 247 EP - 254 PG - 8 SN - 1976-4251 DO - 10.5714/CL.2015.16.4.247 UR - https://m2.mtmt.hu/api/publication/25687684 ID - 25687684 LA - English DB - MTMT ER - TY - JOUR AU - Li, Sa AU - Halperin, Shakked O AU - Wang, Chang-An TI - Fabrication of porous silver/titania composite hollow spheres with enhanced photocatalytic performance JF - MATERIALS CHEMISTRY AND PHYSICS J2 - MATER CHEM PHYS VL - 149 PY - 2015 SP - 1 EP - 6 PG - 6 SN - 0254-0584 DO - 10.1016/j.matchemphys.2014.10.029 UR - https://m2.mtmt.hu/api/publication/25687688 ID - 25687688 LA - English DB - MTMT ER - TY - JOUR AU - Sakamoto, Hirokatsu AU - Ohara, Tomoyuki AU - Yasumoto, Naoki AU - Shiraishi, Yasuhiro AU - Ichikawa, Satoshi AU - Tanaka, Shunsuke AU - Hirai, Takayuki TI - Hot-Electron-Induced Highly Efficient O-2 Activation by Pt Nanoparticles Supported on Ta2O5 Driven by Visible Light JF - JOURNAL OF THE AMERICAN CHEMICAL SOCIETY J2 - J AM CHEM SOC VL - 137 PY - 2015 IS - 29 SP - 9324 EP - 9332 PG - 9 SN - 0002-7863 DO - 10.1021/jacs.5b04062 UR - https://m2.mtmt.hu/api/publication/25687686 ID - 25687686 LA - English DB - MTMT ER - TY - JOUR AU - Devi, LG AU - Nagaraj, B TI - Disinfection of Escherichia Coli Gram Negative Bacteria Using Surface Modified TiO2. Optimization of Ag Metallization And Depiction of Charge Transfer Mechanism TS - Optimization of Ag Metallization And Depiction of Charge Transfer Mechanism JF - PHOTOCHEMISTRY AND PHOTOBIOLOGY J2 - PHOTOCHEM PHOTOBIOL VL - 90 PY - 2014 IS - 5 SP - 1089 EP - 1098 PG - 10 SN - 0031-8655 DO - 10.1111/php.12308 UR - https://m2.mtmt.hu/api/publication/24309987 ID - 24309987 LA - English DB - MTMT ER - TY - JOUR AU - Han, C AU - Likodimos, V AU - Khan, JA AU - Nadagouda, MN AU - Andersen, J AU - Falaras, P AU - Rosales-Lombardi, P AU - Dionysiou, DD TI - UV–visible light-activated Ag-decorated, monodisperse TiO2 aggregates for treatment of the pharmaceutical oxytetracycline JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 21 PY - 2014 IS - 20 SP - 11781 EP - 11793 PG - 13 SN - 0944-1344 DO - 10.1007/s11356-013-2233-5 UR - https://m2.mtmt.hu/api/publication/24309958 ID - 24309958 LA - English DB - MTMT ER - TY - JOUR AU - Kmetykó, Ákos AU - Mogyorósi, Károly AU - Gerse, V AU - Kónya, Zoltán AU - Pusztai, Péter AU - Dombi, András AU - Hernádi, Klára TI - Photocatalytic H-2 Production Using Pt-TiO2 in the Presence of Oxalic Acid: Influence of the Noble Metal Size and the Carrier Gas Flow Rate JF - MATERIALS J2 - MATERIALS VL - 7 PY - 2014 IS - 10 SP - 7022 EP - 7038 PG - 17 SN - 1996-1944 DO - 10.3390/ma7107022 UR - https://m2.mtmt.hu/api/publication/2792466 ID - 2792466 AB - The primary objective of the experiments was to investigate the differences in the photocatalytic performance when commercially available Aeroxide P25 TiO2 photocatalyst was deposited with differently sized Pt nanoparticles with identical platinum content (1 wt%). The noble metal deposition onto the TiO2 surface was achieved by in situ chemical reduction (CRIS) or by mixing chemically reduced Pt nanoparticle containing sols to the aqueous suspensions of the photocatalysts (sol-impregnated samples, CRSIM). Fine and low-scale control of the size of resulting Pt nanoparticles was obtained through variation of the trisodium citrate concentration during the syntheses. The reducing reagent was NaBH4. Photocatalytic activity of the samples and the reaction mechanism were examined during UV irradiation (lambda(max) = 365 nm) in the presence of oxalic acid (50 mM) as a sacrificial hole scavenger component. The H-2 evolution rates proved to be strongly dependent on the Pt particle size, as well as the irradiation time. A significant change of H-2 formation rate during the oxalic acid transformation was observed which is unusual. It is probably regulated both by the decomposition rate of accumulated oxalic acid and the H+/H-2 redox potential on the surface of the catalyst. The later potential is influenced by the concentration of the dissolved H-2 gas in the reaction mixture. LA - English DB - MTMT ER - TY - JOUR AU - Kmetykó, Ákos AU - Mogyorósi, Károly AU - Pusztai, Péter AU - Radu, Teodora AU - Kónya, Zoltán AU - Dombi, András AU - Hernádi, Klára TI - Photocatalytic H-2 Evolution Using Different Commercial TiO2 Catalysts Deposited with Finely Size-Tailored Au Nanoparticles: Critical Dependence on Au Particle Size JF - MATERIALS J2 - MATERIALS VL - 7 PY - 2014 IS - 12 SP - 7615 EP - 7633 PG - 19 SN - 1996-1944 DO - 10.3390/ma7127615 UR - https://m2.mtmt.hu/api/publication/2823890 ID - 2823890 AB - One weight percent of differently sized Au nanoparticles were deposited on two commercially available TiO2 photocatalysts: Aeroxide P25 and Kronos Vlp7000. The primary objective was to investigate the influence of the noble metal particle size and the deposition method on the photocatalytic activity. The developed synthesis method involves a simple approach for the preparation of finely-tuned Au particles through variation of the concentration of the stabilizing agent. Au was deposited on the TiO2 surface by photo-or chemical reduction, using trisodium citrate as a size-tailoring agent. The Au-TiO2 composites were synthetized by in situ reduction or by mixing the titania suspension with a previously prepared gold sol. The H-2 production activities of the samples were studied in aqueous TiO2 suspensions irradiated with near-UV light in the absence of dissolved O-2, with oxalic acid or methanol as the sacrificial agent. The H-2 evolution rates proved to be strongly dependent on Au particle size: the highest H-2 production rate was achieved when the Au particles measured similar to 6 nm. LA - English DB - MTMT ER - TY - JOUR AU - Nagaraj, B AU - Devi, LG TI - Silver metalized mixed phase manganese-doped titania. Variation of electric field and band bending within the space charge region with respect to the silver content TS - Variation of electric field and band bending within the space charge region with respect to the silver content JF - JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL J2 - J MOL CATAL A-CHEM VL - 390 PY - 2014 SP - 142 EP - 151 PG - 10 SN - 1381-1169 DO - 10.1016/j.molcata.2014.03.019 UR - https://m2.mtmt.hu/api/publication/24309981 ID - 24309981 LA - English DB - MTMT ER - TY - JOUR AU - Senthilraja, A AU - Subash, B AU - Krishnakumar, B AU - Rajamanickam, D AU - Swaminathan, M AU - Shanthi, M TI - Synthesis, characterization and catalytic activity of co-doped Ag–Au–ZnO for MB dye degradation under UV-A light JF - MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING J2 - MAT SCI SEMICON PROC VL - 22 PY - 2014 SP - 83 EP - 91 PG - 9 SN - 1369-8001 DO - 10.1016/j.mssp.2014.02.011 UR - https://m2.mtmt.hu/api/publication/24309962 ID - 24309962 LA - English DB - MTMT ER - TY - JOUR AU - Tang, B AU - Jiang, G AU - Wei, Z AU - Li, X AU - Wang, X AU - Jiang, T AU - Chen, W AU - Wan, J TI - Preparation of N-Doped Bi2WO6 Microspheres for Efficient Visible Light-Induced Photocatalysis JF - ACTA METALLURGICA SINICA ENGLISH LETTERS J2 - ACTA METALL SIN ENGL VL - 27 PY - 2014 IS - 1 SP - 124 EP - 130 PG - 7 SN - 1006-7191 DO - 10.1007/s40195-013-0009-z UR - https://m2.mtmt.hu/api/publication/24309960 ID - 24309960 LA - English DB - MTMT ER - TY - JOUR AU - Yuan, SJ AU - Mu, JK AU - Mao, RY AU - Li, YG AU - Zhang, QH AU - Wang, HZ TI - All-Nanoparticle Self-assembly ZnO/TiO2 Heterojunction Thin Films with Remarkably Enhanced Photoelectrochemical Activity JF - ACS APPLIED MATERIALS & INTERFACES J2 - ACS APPL MATER INTER VL - 6 PY - 2014 IS - 8 SP - 5719 EP - 5725 PG - 7 SN - 1944-8244 DO - 10.1021/am500314n UR - https://m2.mtmt.hu/api/publication/24399114 ID - 24399114 LA - English DB - MTMT ER - TY - JOUR AU - Zhao, F AU - Lu, Q AU - Liu, S TI - Preparation and characterization of In2O3/ZnO heterostructured microbelts by sol–gel combined with electrospinning method JF - JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY J2 - J SOL-GEL SCI TECHN VL - 69 PY - 2014 IS - 2 SP - 357 EP - 363 PG - 7 SN - 0928-0707 DO - 10.1007/s10971-013-3225-0 UR - https://m2.mtmt.hu/api/publication/24309964 ID - 24309964 LA - English DB - MTMT ER - TY - JOUR AU - Zsilák, Zoltán AU - Szabóné Bárdos, Erzsébet AU - Fónagy, Orsolya AU - Horváth, Ottó AU - Horváth, Krisztián AU - Hajós, Péter TI - Degradation of benzenesulfonate by heterogeneous photocatalysis combined with ozonation JF - CATALYSIS TODAY J2 - CATAL TODAY VL - 230 PY - 2014 IS - 1 SP - 55 EP - 60 PG - 6 SN - 0920-5861 DO - 10.1016/j.cattod.2013.10.039 UR - https://m2.mtmt.hu/api/publication/2459837 ID - 2459837 AB - The efficiency of the photocatalytic degradation of pollutants can be enhanced by combination with another advanced oxidation procedure such as ozonation. Application of these two methods for degradation of benzenesulfonate (BS) resulted in a synergic effect; the efficiency of the combined procedure significantly exceeded the sum of those of the individual techniques. Enhancement of the ozone dosage in this system accelerated the mineralization, i.e., the decrease of the total organic carbon content (TOC), more than the decay (transformation) of BS. The initial rates of both processes displayed a maximum at pH 5-6 in both the aerated and the ozonated systems. An increase of pH in the range of 2-7 promoted the mineralization in the ozonated system more than in the aerated one, while for the decay of BS a reversed relation was observed. © 2013 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Zsilák, Zoltán AU - Fónagy, Orsolya AU - Szabóné Bárdos, Erzsébet AU - Horváth, Ottó AU - Horváth, Krisztián AU - Hajós, Péter TI - Degradation of industrial surfactants by photocatalysis combined with ozonation JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 21 PY - 2014 IS - 19 SP - 11126 EP - 11134 PG - 9 SN - 0944-1344 DO - 10.1007/s11356-014-2527-2 UR - https://m2.mtmt.hu/api/publication/2583842 ID - 2583842 AB - The efficiency of titanium dioxide-mediated photocatalytic degradation of pollutants can be enhanced by combination with another advanced oxidation procedure such as ozonation. Mineralization of hydroxy- and dihydroxybenzenesulfonate based on these methods, both individually and combined, was investigated by monitoring the total organic carbon content, sulfate concentration, pH, high-performance liquid chromatography as well as the absorption spectral changes. The mineralization efficiency of the combined procedure significantly exceeded the sum of those of the individual techniques. The comparison of the disappearance of the starting material and the formation of the sulfate ions indicates that desulfonation is not the primary step of the degradation. Moreover, in the case of the combined method, ring cleavage, and thus, partial mineralization can occur without desulfonation. Efficient degradation of other, widely used industrial surfactants, such as alkylbenzene sulfonates and alkyl ether sulfates, was also achieved by heterogeneous photocatalysis combined with ozonation, offering an applicable method for the removal of these pollutants. © 2014 Springer-Verlag Berlin Heidelberg. LA - English DB - MTMT ER - TY - JOUR AU - Badhwar, N AU - Gupta, N AU - Pal, B TI - PHOTOCHEMICAL FABRICATION OF TRANSITION METAL NANOPARTICLES USING CdS TEMPLATE AND THEIR CO-CATALYSIS EFFECTS FOR TiO2 PHOTOCATALYSIS JF - INTERNATIONAL JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY J2 - INT J NANOSCI NANOTECH VL - 12 PY - 2013 IS - 3 PG - 10 SN - 2423-5911 UR - https://m2.mtmt.hu/api/publication/24308560 ID - 24308560 LA - English DB - MTMT ER - TY - JOUR AU - Disha, R C AU - Meena, A TI - Study on Rate of Decolorization of Textile Azo Dye Direct Red 5B by Recently Developed Photocatalyst JF - INTERNATIONAL JOURNAL OF SCIENTIFIC AND RESEARCH PUBLICATION J2 - IJSRP VL - 3 PY - 2013 IS - 2 SP - 1 EP - 4 PG - 4 SN - 2250-3153 UR - https://m2.mtmt.hu/api/publication/23288443 ID - 23288443 LA - English DB - MTMT ER - TY - JOUR AU - Khakpoor, AA AU - Borjian, R AU - Hoseinzade, M TI - Optical Properties Improvement TiO2 Thin Films with Adding the Au, Ag or Cu Nanoparticles JF - International materials physics journal J2 - International materials physics journal VL - 1 PY - 2013 IS - 2 SP - 8 EP - 13 PG - 6 SN - 2345-3087 UR - https://m2.mtmt.hu/api/publication/24308564 ID - 24308564 LA - English DB - MTMT ER - TY - JOUR AU - Kong, W AU - Tian, B AU - Zhang, J AU - He, D AU - Anpo, M TI - Microstructure and hydrogen production activity of Pt-TiO2 prepared by precipitation-photodeposition JF - RESEARCH ON CHEMICAL INTERMEDIATES J2 - RES CHEM INTERMEDIAT VL - 39 PY - 2013 IS - 4 SP - 1701 EP - 1710 PG - 10 SN - 0922-6168 DO - 10.1007/s11164-012-0903-4 UR - https://m2.mtmt.hu/api/publication/23288445 ID - 23288445 LA - English DB - MTMT ER - TY - JOUR AU - Mahlamvana, F AU - Kriek, R J TI - The impeding effect of dissolved oxygen on the photocatalytic reduction of [PdCln(H2O)(4-n)](2-n) (n=0-4) complexes employing different TiO2 photocatalysts in the absence of an added sacrificial reducing agent JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 142 PY - 2013 SP - 809 EP - 816 PG - 8 SN - 0926-3373 DO - 10.1016/j.apcatb.2013.06.012 UR - https://m2.mtmt.hu/api/publication/25687693 ID - 25687693 LA - English DB - MTMT ER - TY - JOUR AU - Mahlamvana, F AU - Kriek, R J TI - The impeding effect of dissolved oxygen on the photocatalytic reduction of [PdCln(H2O)4-n]2-n (n=0-4) complexes employing different TiO2 photocatalysts in the absence of an added sacrificial reducing agent JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 142-143 PY - 2013 SP - 809 EP - 816 PG - 8 SN - 0926-3373 UR - https://m2.mtmt.hu/api/publication/23288447 ID - 23288447 LA - English DB - MTMT ER - TY - JOUR AU - Ramya, S AU - Ruth, Nithila S D AU - George, R P AU - Krishna, D N G AU - Thinaharan, C AU - Kamachi, Mudali U TI - Antibacterial studies on Eu-Ag codoped TiO2 surfaces JF - CERAMICS INTERNATIONAL J2 - CERAM INT VL - 39 PY - 2013 IS - 2 SP - 1695 EP - 1705 PG - 11 SN - 0272-8842 DO - 10.1016/j.ceramint.2012.08.012 UR - https://m2.mtmt.hu/api/publication/23002496 ID - 23002496 LA - English DB - MTMT ER - TY - JOUR AU - Rossetti, I TI - Advanced Oxides In Catalysis JF - Current Inorganic Chemistry J2 - Current Inorganic Chemistry VL - 3 PY - 2013 IS - 1 SP - 50 EP - 69 PG - 20 SN - 1877-9441 UR - https://m2.mtmt.hu/api/publication/24308577 ID - 24308577 LA - English DB - MTMT ER - TY - JOUR AU - Arsana, P AU - Bubpa, C AU - Sang-aroon, W TI - Photocatalytic activity under solar irradiation of silver and copper doped zincoxide. Photodeposition versus liquid impregnation methods TS - Photodeposition versus liquid impregnation methods JF - JOURNAL OF APPLIED SCIENCES J2 - J APPL SCI VL - 12 PY - 2012 IS - 17 SP - 1809 EP - 1816 PG - 8 SN - 1812-5654 UR - https://m2.mtmt.hu/api/publication/23002487 ID - 23002487 LA - English DB - MTMT ER - TY - JOUR AU - Devi, L G AU - Nagaraj, B AU - Rajashekhar, K E TI - Synergistic effect of Ag deposition and nitrogen doping in TiO2 for the degradation of phenol under solar irradiation in presence of electron acceptor JF - CHEMICAL ENGINEERING JOURNAL J2 - CHEM ENG J VL - 181-182 PY - 2012 SP - 259 EP - 266 PG - 8 SN - 1385-8947 DO - 10.1016/j.cej.2011.11.076 UR - https://m2.mtmt.hu/api/publication/23002446 ID - 23002446 LA - English DB - MTMT ER - TY - JOUR AU - Holdich, R G AU - Ipek, I Y AU - Lazrigh, M AU - Shama, G TI - Production and evaluation of floating photocatalytic composite particles formed using pickering emulsions and membrane emulsification JF - INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH J2 - IND ENG CHEM RES VL - 51 PY - 2012 IS - 38 SP - 12509 EP - 12516 PG - 8 SN - 0888-5885 DO - 10.1021/ie3001748 UR - https://m2.mtmt.hu/api/publication/23002492 ID - 23002492 LA - English DB - MTMT ER - TY - JOUR AU - Kim, J AU - Yong, K TI - A facile, coverage controlled deposition of Au nanoparticles on ZnO nanorods by sonochemical reaction for enhancement of photocatalytic activity JF - JOURNAL OF NANOPARTICLE RESEARCH J2 - J NANOPART RES VL - 14 PY - 2012 IS - 8 SN - 1388-0764 DO - 10.1007/s11051-012-1033-z UR - https://m2.mtmt.hu/api/publication/23002484 ID - 23002484 LA - English DB - MTMT ER - TY - JOUR AU - Li, L AU - Jiang, F AU - Liu, J AU - Wan, H AU - Wan, Y AU - Zheng, S TI - Enhanced photocatalytic reduction of aqueous Pb(II) over Ag loaded TiO2 with formic acid as hole scavenger JF - JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING J2 - J ENVIRON SCI HEAL A VL - 47 PY - 2012 IS - 3 SP - 327 EP - 336 PG - 10 SN - 1093-4529 UR - https://m2.mtmt.hu/api/publication/23002461 ID - 23002461 LA - English DB - MTMT ER - TY - JOUR AU - Horváth, Ottó AU - Szabóné Bárdos, Erzsébet AU - Zsilák, Zoltán AU - Gyula, B TI - Application of photocatalytic procedure combined with zonation for treatment of industrial wastewater - a case study JF - PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING J2 - PERIOD POLYTECH CHEM ENG VL - 56 PY - 2012 IS - 2 SP - 49 EP - 54 PG - 6 SN - 0324-5853 DO - 10.3311/pp.ch.2012-2.01 UR - https://m2.mtmt.hu/api/publication/2372387 ID - 2372387 N1 - CT Conference of Chemical Engineering CY 2012 CL Veszprem, HUNGARY AB - Several kinds of industrial wastewaters contain pollutants which cannot be entirely removed by physico-chemical treatments. In this case study wastewaters of a metal-working factory were purified. The results. clearly indicated that TiO2-based heterogeneous photocatalysis combined with zonation can efficiently decrease the COD value of the effluent from the cleaning plant currently applied, thus a final biological treatment ensures the required new (higher) level of purity. However, for wastewaters of large volume, which are generally mixtures of various process waters of different origins, the application of this heterogeneous photocatalysis at the end of the purification chain is not reasonable because of the high costs of investment. Insertion of the combined method into the middle of the cleaning technology, as a pre-treating stage of a heavily polluted constituent (an emulsion in this case) of the whole mixture before the biological treatment, is more cost effective. In the most economical procedure the combined method is applied for the emulsion diluted with weakly polluted wash waters. Thus, the subsequent biological treatment of the total mixture decreases the COD to 116 mg dm(-3). LA - English DB - MTMT ER - TY - JOUR AU - Pulido, Melián E AU - González, Díaz O AU - Doña, Rodríguez J M AU - Colón, G AU - Navío, J A AU - Macías, M AU - Pérez, Peña J TI - Effect of deposition of silver on structural characteristics and photoactivity of TiO 2-based photocatalysts JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 127 PY - 2012 SP - 112 EP - 120 PG - 9 SN - 0926-3373 DO - 10.1016/j.apcatb.2012.08.007 UR - https://m2.mtmt.hu/api/publication/23002488 ID - 23002488 LA - English DB - MTMT ER - TY - JOUR AU - Veréb, Gábor AU - Ambrus, Z AU - Pap, Zsolt AU - Kmetykó, Ákos AU - Dombi, András AU - Danciu, V AU - Cheesman, A AU - Mogyorósi, Károly TI - Comparative study on UV and visible light sensitive bare and doped titanium dioxide photocatalysts for the decomposition of environmental pollutants in water JF - APPLIED CATALYSIS A-GENERAL J2 - APPL CATAL A-GEN VL - 417 PY - 2012 SP - 26 EP - 36 PG - 11 SN - 0926-860X DO - 10.1016/j.apcata.2011.12.018 UR - https://m2.mtmt.hu/api/publication/1949268 ID - 1949268 N1 - Research Group of Environmental Chemistry, Institute of Chemistry, University of Szeged, Dom ter 7, H-6720 Szeged, Hungary Department of Inorganic and Analytical Chemistry, Faculty of Sciences and Informatics, University of Szeged, Dom ter 7, H-6720 Szeged, Hungary Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany János 11, RO-400028 Cluj-Napoca, Romania Department of Applied and Environmental Chemistry, Faculty of Sciences and Informatics, University of Szeged, Rerrich Bela ter 1, H-6720 Szeged, Hungary Cited By :39 Export Date: 15 November 2019 CODEN: ACAGE Correspondence Address: Mogyorósi, K.; Department of Inorganic and Analytical Chemistry, Faculty of Sciences and Informatics, University of Szeged, Dom ter 7, H-6720 Szeged, Hungary; email: k.mogyorosi@chem.u-szeged.hu Funding details: NKFP DA_THERM TECH_08_A4 Funding details: Information-Technology Promotion Agency, HU-SRB/0901/121/116 Funding details: CK 80193 Funding details: European Commission Funding details: OTKA PD7837 8 Funding text 1: This article has been produced with the financial assistance of the European Union ( Hungary-Serbia IPA Cross-border Co-operation Programme ; HU-SRB/0901/121/116 ). The content of the document is the sole responsibility of the University of Szeged and can under no circumstances be regarded as reflecting the position of the European Union and/or the Managing Authority. This work was co-financed by the grant from the Hungarian National Office of Research and Technology ( NKFP DA_THERM TECH_08_A4 ) and by the grant from the Hungarian National Office of Research and Technology ( OTKA CK 80193 ). Authors thank for the Hungarian–Romanian TeT mobility project (OMFB-00415/2008/RO-21/2007). KM thanks the financial support of the Hungarian Research Foundation ( OTKA PD7837 8) and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences. The authors are indebted to Evonik Industries for supporting our work by supplying Aeroxide P25 TiO 2 sample for these studies. LA - English DB - MTMT ER - TY - JOUR AU - Zhou, X AU - Hu, C AU - Hu, X AU - Peng, T TI - Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al 2O 3 suspensions with visible-light irradiation JF - JOURNAL OF HAZARDOUS MATERIALS J2 - J HAZARD MATER VL - 219-220 PY - 2012 SP - 276 EP - 282 PG - 7 SN - 0304-3894 UR - https://m2.mtmt.hu/api/publication/23002462 ID - 23002462 LA - English DB - MTMT ER - TY - JOUR AU - Zhou, Xuefeng AU - Hu, Chun AU - Hu, Xuexiang AU - Peng, Tianwei TI - Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al2O3 suspensions with visible-light irradiation JF - JOURNAL OF HAZARDOUS MATERIALS J2 - J HAZARD MATER VL - 219 PY - 2012 SP - 276 EP - 282 PG - 7 SN - 0304-3894 DO - 10.1016/j.jhazmat.2012.04.009 UR - https://m2.mtmt.hu/api/publication/25687694 ID - 25687694 LA - English DB - MTMT ER - TY - JOUR AU - Chan, SC AU - Barteau, MA TI - Physico-Chemical Effects on the Scale-Up of Ag Photodeposition on TiO2 Nanoparticles JF - TOPICS IN CATALYSIS J2 - TOP CATAL VL - 54 PY - 2011 IS - 5-7 SP - 378 EP - 389 PG - 12 SN - 1022-5528 DO - 10.1007/s11244-011-9666-1 UR - https://m2.mtmt.hu/api/publication/22648199 ID - 22648199 LA - English DB - MTMT ER - TY - JOUR AU - Devi, LG AU - Reddy, KM TI - Photocatalytic performance of silver TiO2: Role of electronic energy levels JF - APPLIED SURFACE SCIENCE J2 - APPL SURF SCI VL - 257 PY - 2011 IS - 15 SP - 6821 EP - 6828 PG - 8 SN - 0169-4332 DO - 10.1016/j.apsusc.2011.03.006 UR - https://m2.mtmt.hu/api/publication/22724580 ID - 22724580 LA - English DB - MTMT ER - TY - JOUR AU - Szabóné Bárdos, Erzsébet AU - Katalin, Somogyi AU - Norbert, Törő AU - Kiss, Gyula AU - Horváth, Attila TI - Photocatalytic decomposition of L-phenylalanine over TiO2. Identification of intermediates and the mechanism of photodegradation TS - Identification of intermediates and the mechanism of photodegradation JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 101 PY - 2011 SP - 471 EP - 478 PG - 8 SN - 0926-3373 DO - 10.1016/j.apcatb.2010.10.018 UR - https://m2.mtmt.hu/api/publication/1429992 ID - 1429992 LA - English DB - MTMT ER - TY - JOUR AU - Henderson, MA TI - A surface science perspective on TiO(2) photocatalysis JF - SURFACE SCIENCE REPORTS J2 - SURF SCI REP VL - 66 PY - 2011 IS - 6-7 SP - 185 EP - 297 PG - 113 SN - 0167-5729 DO - 10.1016/j.surfrep.2011.01.001 UR - https://m2.mtmt.hu/api/publication/21521592 ID - 21521592 LA - English DB - MTMT ER - TY - JOUR AU - Karunakaran, C AU - Dhanalakshmi, R AU - Manikandan, G AU - Gomathisankar, P TI - Photodegradation of carboxylic acids on Al2O3 and SiO2 nanoparticles JF - INDIAN JOURNAL OF CHEMISTRY SECTION A J2 - INDIAN J CHEM A VL - 50 PY - 2011 IS - 2 SP - 163 EP - 170 PG - 8 SN - 0376-4710 UR - https://m2.mtmt.hu/api/publication/25720710 ID - 25720710 LA - English DB - MTMT ER - TY - JOUR AU - Kumar, SG AU - Devi, LG TI - Review on Modified TiO(2) Photocatalysis under UV/Visible Light: Selected Results and Related Mechanisms on Interfacial Charge Carrier Transfer Dynamics JF - JOURNAL OF PHYSICAL CHEMISTRY A J2 - J PHYS CHEM A VL - 115 PY - 2011 IS - 46 SP - 13211 EP - 13241 PG - 31 SN - 1089-5639 DO - 10.1021/jp204364a UR - https://m2.mtmt.hu/api/publication/21779522 ID - 21779522 LA - English DB - MTMT ER - TY - JOUR AU - Liu, Y Liu Y AU - Hu, JC AU - Li, JL TI - Synthesis and photoactivity of the highly efficient Ag species/TiO(2) nanoflakes photocatalysts JF - JOURNAL OF ALLOYS AND COMPOUNDS J2 - J ALLOY COMPD VL - 509 PY - 2011 IS - 16 SP - 5152 EP - 5158 PG - 7 SN - 0925-8388 DO - 10.1016/j.jallcom.2011.02.020 UR - https://m2.mtmt.hu/api/publication/21534626 ID - 21534626 LA - English DB - MTMT ER - TY - JOUR AU - Sun, Lanlan AU - Zhao, Dongxu AU - Song, Zhiming AU - et, al TI - Gold nanoparticles modified ZnO nanorods with improved photocatalytic activity JF - JOURNAL OF COLLOID AND INTERFACE SCIENCE J2 - J COLLOID INTERF SCI VL - 363 PY - 2011 IS - 1 SP - 175 EP - 181 PG - 7 SN - 0021-9797 DO - 10.1016/j.jcis.2011.07.005 UR - https://m2.mtmt.hu/api/publication/21594403 ID - 21594403 LA - English DB - MTMT ER - TY - JOUR AU - Szabóné Bárdos, Erzsébet AU - Markovics, O AU - Horváth, Ottó AU - Toro, N AU - Kiss, Gyula TI - Photocatalytic degradation of benzenesulfonate on colloidal titanium dioxide JF - WATER RESEARCH J2 - WATER RES VL - 45 PY - 2011 IS - 4 SP - 1617 EP - 1628 PG - 12 SN - 0043-1354 DO - 10.1016/j.watres.2010.11.045 UR - https://m2.mtmt.hu/api/publication/1464054 ID - 1464054 N1 - Megjegyzés-21710530 : FN Thomson Reuters Web of Knowledge Megjegyzés-22004541 Chemicals/CAS: argon, 7440-37-1; hydrogen, 12385-13-6, 1333-74-0; sulfate, 14808-79-8; titanium dioxide, 1317-70-0, 1317-80-2, 13463-67-7, 51745-87-0; Benzenesulfonates; Carbon, 7440-44-0; Colloids; Ions; Organic Chemicals; Oxygen, 7782-44-7; Solutions; Sulfates; Titanium, 7440-32-6; benzenesulfonic acid, 98-11-3; titanium dioxide, 13463-67-7 Megjegyzés-23115323 N1 : Chemicals/CASargon, 7440-37-1; hydrogen, 12385-13-6, 1333-74-0; sulfate, 14808-79-8; titanium dioxide, 1317-70-0, 1317-80-2, 13463-67-7, 51745-87-0; Benzenesulfonates; Carbon, 7440-44-0; Colloids; Ions; Organic Chemicals; Oxygen, 7782-44-7; Solutions; Sulfates; Titanium, 7440-32-6; benzenesulfonic acid, 98-11-3; titanium dioxide, 13463-67-7 AB - Titanium dioxide-mediated photocatalyzed degradation of benzenesulfonate (BS) was investigated by monitoring chemical oxygen demand (COD), total organic carbon (TOC) content, sulfate concentration, pH as well as the absorption and emission spectral changes in both argon-saturated and aerated systems. Liquid chromatography-mass spectrometry analysis was utilized for the detection of intermediates formed during the irradiation in the UVA range (λmax = 350 nm). The results obtained by these analytical techniques indicate that the initial step of degradation is hydroxylation of the starting surfactant, resulting in the production of hydroxy- and dihydroxybenzenesulfonates. These reactions were accompanied by desulfonation, which increases [H+] in both argon-saturated and aerated systems. In accordance with our previous theoretical calculations, the formation of ortho- and meta-hydroxylated derivatives is favored in the first step. The main product of the further oxygenation of these derivatives was 2,5-dihydroxy-benzesulfonate. No decay of the hydroxy species occurred during the 8-h irradiation in the absence of dissolved oxygen. In the aerated system much more efficient desulfonation and hydroxylation, moreover, a significant decrease of TOC took place at the initial stage. Further hydroxylation led to cleavage of the aromatic system, due to the formation of polyhydroxy derivatives, followed by ring fission, resulting in the production of aldehydes and carboxylic acids. Total mineralization was achieved by the end of the 8-h photocatalysis. It has been proved that in this photocatalytic procedure the presence of dissolved oxygen is necessary for the cleavage of the aromatic ring because hydroxyl radicals photochemically formed in the deaerated system too alone are not able to break the C-C bonds. © 2010 Elsevier Ltd. 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