TY - JOUR AU - Mészáros, Rebeka Ildikó AU - Szabó, Vivien AU - Kutus, Bence AU - Baán, Kornélia AU - Kónya, Zoltán AU - Kukovecz, Ákos AU - Sipos, Pál Miklós AU - Szabados, Márton TI - Continuous-flow hydrogenation of cinnamaldehyde over catalysts derived from modified CoAl4 layered double hydroxides incorporating Mn, Ni, Cu and Zn ions JF - APPLIED CATALYSIS A-GENERAL J2 - APPL CATAL A-GEN VL - 679 PY - 2024 PG - 14 SN - 0926-860X DO - 10.1016/j.apcata.2024.119738 UR - https://m2.mtmt.hu/api/publication/34801853 ID - 34801853 LA - English DB - MTMT ER - TY - JOUR AU - El Aouni, Aicha AU - El Ouardi, Mohamed AU - Arab, Madjid AU - Saadi, Mohamed AU - Haspel, Henrik AU - Kónya, Zoltán AU - Ben Ali, Abdelkader AU - Jada, Amane AU - BaQais, Amal AU - Ait Ahsaine, Hassan TI - Design of Bismuth Tungstate Bi2WO6 Photocatalyst for Enhanced and Environmentally Friendly Organic Pollutant Degradation JF - MATERIALS J2 - MATERIALS VL - 17 PY - 2024 IS - 5 SP - 1029 SN - 1996-1944 DO - 10.3390/ma17051029 UR - https://m2.mtmt.hu/api/publication/34688462 ID - 34688462 AB - In this study, a chemical precipitation approach was adopted to produce a photocatalyst based on bismuth tungstate Bi2WO6 for enhanced and environmentally friendly organic pollutant degradation. Various tools such as X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), optical spectroscopy and X-ray photoelectron spectroscopy, were employed to assess the structural and morphological properties. Hence, the XRD profiles showed a well crystallized Bi2WO6 orthorhombic phase. The photocatalytic performance of the resulting photocatalyst was assessed by the decomposition of Rhodamine B (RhB) and methyl orange (MO) with a decomposition efficiency of 97 and 92%, along with the highest chemical oxygen demand of 82 and 79% during 120 min of illumination, respectively. The principal novelty of the present work is to focus on the changes in the crystalline structure, the morphology, and the optical and the photoelectrochemical characteristics of the Bi2WO6, by tuning the annealing temperature of the designed photocatalyst. Such physicochemical property changes in the as-prepared photocatalyst will affect in turn its photocatalytic activity toward the organic pollutant decomposition. The photocatalytic mechanism was elaborated based on electrochemical impedance spectroscopy, photocurrent analysis, photoluminescence spectroscopy, and radical trapping measurements. The overall data indicate that the superoxide O2•− and holes h+ are the principal species responsible for the pollutant photodegradation. LA - English DB - MTMT ER - TY - JOUR AU - Rónavári, Andrea AU - Ochirkhuyag, Altantuya AU - Igaz, Nóra AU - Szerencsés, Bettina AU - Ballai, Gergő AU - Huliák, Ildikó AU - Bocz, Csenge AU - Kovács, Ákos AU - Pfeiffer, Ilona AU - Csontné Kiricsi, Mónika AU - Kónya, Zoltán TI - Preparation, characterization and in vitro evaluation of the antimicrobial and antitumor activity of MnOx nanoparticles JF - COLLOIDS AND SURFACES A : PHYSICOCHEMICAL AND ENGINEERING ASPECTS J2 - COLLOID SURFACE A VL - 688 PY - 2024 SN - 0927-7757 DO - 10.1016/j.colsurfa.2024.133528 UR - https://m2.mtmt.hu/api/publication/34687262 ID - 34687262 LA - English DB - MTMT ER - TY - JOUR AU - Najari, Sara AU - Saeidi, Samrand AU - Sápi, András AU - Szamosvölgyi, Ákos AU - Papp, Ádám AU - Efremova, Anastasiia AU - Bali, Henrik AU - Kónya, Zoltán TI - Synergistic enhancement of CO2 hydrogenation to C5+ hydrocarbons using mixed Fe5C2 and Na-Fe3O4 catalysts: Effects of oxide/carbide ratio, proximity, and reduction JF - CHEMICAL ENGINEERING JOURNAL J2 - CHEM ENG J VL - 485 PY - 2024 PG - 16 SN - 1385-8947 DO - 10.1016/j.cej.2024.149787 UR - https://m2.mtmt.hu/api/publication/34646124 ID - 34646124 LA - English DB - MTMT ER - TY - JOUR AU - Fabrikov, Dmitri AU - Varga, Ágnes Timea AU - García, María Carmen Vargas AU - Bélteky, Péter AU - Kozma, Gábor AU - Kónya, Zoltán AU - López Martínez, Josefa L. AU - Barroso, Fernando AU - Sánchez-Muros, María José TI - Antimicrobial and antioxidant activity of encapsulated tea polyphenols in chitosan/alginate-coated zein nanoparticles: a possible supplement against fish pathogens in aquaculture JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 31 PY - 2024 SP - 13673 EP - 13687 PG - 15 SN - 0944-1344 DO - 10.1007/s11356-024-32058-x UR - https://m2.mtmt.hu/api/publication/34535462 ID - 34535462 AB - Regulation of antibiotic use in aquaculture calls for the emergence of more sustainable alternative treatments. Tea polyphenols (GTE), particularly epigallocatechin gallate (EGCG), have various biological activities. However, tea polyphenols are susceptible to degradation. In this work, EGCG and GTE were encapsulated in zein nanoparticles (ZNP) stabilized with alginate (ALG) and chitosan (CS) to reduce the degradation effect. ALG-coated ZNP and ALG/CS-coated ZNP encapsulating EGCG or GTE were obtained with a hydrodynamic size of less than 300 nm, an absolute ζ -potential value >30 mV, and an encapsulation efficiency greater than 75%. The antioxidant capacity of the encapsulated substances, although lower than that of the free ones, maintained high levels. On the other hand, the evaluation of antimicrobial activity showed greater efficiency in terms of growth inhibition for ALG/CS-ZNP formulations, with average overall values of around 60%, reaching an inhibition of more than 90% for Photobacterium damselae . These results support encapsulation as a good strategy for tea polyphenols, as it allows maintaining significant levels of antioxidant activity and increasing the potential for antimicrobial activity, in addition to increasing protection against sources of degradation. LA - English DB - MTMT ER - TY - JOUR AU - Solymos, Karolina AU - Babcsányi, Izabella AU - Ariya, Badam AU - Gyulavári, Tamás AU - Ágoston, Áron AU - Szamosvölgyi, Ákos AU - Kukovecz, Ákos AU - Kónya, Zoltán AU - Farsang, Andrea AU - Pap, Zsolt TI - Photocatalytic and surface properties of titanium dioxide nanoparticles in soil solutions JF - ENVIRONMENTAL SCIENCE-NANO J2 - ENVIRON SCI-NANO VL - 11 PY - 2024 IS - 3 SP - 1204 EP - 1216 PG - 13 SN - 2051-8153 DO - 10.1039/D3EN00622K UR - https://m2.mtmt.hu/api/publication/34513997 ID - 34513997 AB - Nanotechnology has emerged as a rapidly growing scientific field with diverse applications. Titanium dioxide nanoparticles are among the most commonly used nanoparticles due to their unique properties. However, their release... LA - English DB - MTMT ER - TY - JOUR AU - Szenti, Imre AU - Efremova, Anastasiia AU - Kiss, János AU - Sápi, András AU - Óvári, László AU - Halasi, Gyula AU - Haselmann, Ulrich AU - Zhang, Zhaoli AU - Morales-Vidal, Jordi AU - Baán, Kornélia AU - Kukovecz, Ákos AU - López, Núria AU - Kónya, Zoltán TI - Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity JF - ANGEWANDTE CHEMIE-INTERNATIONAL EDITION J2 - ANGEW CHEM INT EDIT VL - 63 PY - 2024 IS - 8 PG - 7 SN - 1433-7851 DO - 10.1002/anie.202317343 UR - https://m2.mtmt.hu/api/publication/34471429 ID - 34471429 AB - The implementation of supported metal catalysts heavily relies on the synergistic interactions between metal nanoparticles and the material they are dispersed on. It is clear that interfacial perimeter sites have outstanding skills for turning catalytic reactions over, however, high activity and selectivity of the designed interface‐induced metal distortion can also obtain catalysts for the most crucial industrial processes as evidenced in this paper. Herein, the beneficial synergy established between designed Pt nanoparticles and MnO in the course of the reverse water gas shift (RWGS) reaction resulted in a Pt/MnO catalyst having ~10 times higher activity compared to the reference Pt/SBA‐15 catalyst with >99% CO selectivity. Under activation, a crystal assembly through the metallic Pt (110) and MnO evolved, where the plane distance differences caused a mismatched row structure in softer Pt nanoparticles, which was identified by microscopic and surface‐sensitive spectroscopic characterizations combined with density functional theory simulations. The generated edge dislocations caused the Pt lattice expansion which led to the weakening of the Pt‐CO bond. Even though MnO also exhibited an adverse effect on Pt by lowering the number of exposed metal sites, rapid desorption of the linearly adsorbed CO species governed the performance of the Pt/MnO in the RWGS. LA - English DB - MTMT ER - TY - JOUR AU - Kása, Eszter AU - Szabó, Yvette AU - Szabados, Márton AU - Kukovecz, Ákos AU - Kónya, Zoltán AU - Sipos, Pál Miklós AU - Kutus, Bence TI - The neutralization of tricalcium aluminate hexahydrate and its spontaneous transformation into Friedel's salt, a layered double hydroxide JF - CEMENT AND CONCRETE RESEARCH J2 - CEMENT CONCRETE RES VL - 177 PY - 2024 PG - 13 SN - 0008-8846 DO - 10.1016/j.cemconres.2023.107414 UR - https://m2.mtmt.hu/api/publication/34452984 ID - 34452984 LA - English DB - MTMT ER - TY - JOUR AU - Kondak, Selahattin AU - Janovszky, Patrick Martin AU - Szőllősi, Réka AU - Molnár, Árpád AU - Kondak, Dóra AU - Adedokun, Oluwatosin Peace AU - Dimitrakopoulos, Panayiotis G. AU - Rónavári, Andrea AU - Kónya, Zoltán AU - Erdei, László AU - Galbács, Gábor AU - Kolbert, Zsuzsanna TI - Nickel oxide nanoparticles induce cell wall modifications, root anatomical changes, and nitrosative signaling in ecotypes of Ni hyperaccumulator Odontarrhena lesbiaca JF - ENVIRONMENTAL POLLUTION J2 - ENVIRON POLLUT VL - 341 PY - 2024 PG - 14 SN - 0269-7491 DO - 10.1016/j.envpol.2023.122874 UR - https://m2.mtmt.hu/api/publication/34353068 ID - 34353068 LA - English DB - MTMT ER - TY - JOUR AU - Slijepčević, Nataša AU - Rađenović, Dunja AU - Beljin, Jelena AU - Kozma, Gábor AU - Kónya, Zoltán AU - Maletić, Snežana AU - Tomašević Pilipović, Dragana TI - A novel co-contaminated sediment treatment approach: Quercus petraea leaf-extracted nZVI supported on native clay and biochar for potentially toxic elements and PAHs removal JF - JOURNAL OF SOILS AND SEDIMENTS J2 - J SOIL SEDIMENT VL - 24 PY - 2024 IS - 1 SP - 509 EP - 524 PG - 16 SN - 1439-0108 DO - 10.1007/s11368-023-03682-w UR - https://m2.mtmt.hu/api/publication/34353029 ID - 34353029 LA - English DB - MTMT ER -