@article{MTMT:34823133,
	title = {Enhanced Photocatalytic and Filtration Performance of TiO2-Ag Composite-Coated Membrane Used for the Separation of Oil Emulsions},
	url = {https://m2.mtmt.hu/api/publication/34823133},
	author = {Fazekas, Ákos Ferenc and Gyulavári, Tamás and Ágoston, Áron and Janovák, László and Heszlerné Kopniczky, Judit and László, Zsuzsanna and Veréb, Gábor},
	doi = {10.3390/separations11040112},
	journal-iso = {SEPARATIONS},
	journal = {SEPARATIONS},
	volume = {11},
	unique-id = {34823133},
	issn = {2297-8739},
	abstract = {Polyvinylidene fluoride (PVDF) membranes were coated with TiO2 and TiO2-Ag to enhance their efficiency for oil-in-water emulsion separation. The photocatalytic activities of the two modified membranes and their filtration performances were compared in detail. The significantly enhanced photocatalytic activity of the TiO2-Ag composite was proved using a methyl orange (MO) solution (c = 10−5 M) and a crude oil emulsion (c = 50 mg·L−1). The TiO2-Ag-coated membrane reduced the MO concentration by 87%, whereas the TiO2-modified membrane reached only a 46% decomposition. The photocatalytic reduction in the chemical oxygen demand of the emulsion was also ~50% higher using the TiO2-Ag-coated membrane compared to that of the TiO2-coated membrane. The photoluminescence measurements demonstrated a reduced electron/hole recombination, achieved by the Ag nanoparticle addition (TiO2-Ag), which also explained the enhanced photocatalytic activity. A significant improvement in the oil separation performance with the TiO2-Ag-coated membrane was also demonstrated: a substantial increase in the flux and flux recovery ratio (up to 92.4%) was achieved, together with a notable reduction in the flux decay ratio and the irreversible filtration resistance. Furthermore, the purification efficiency was also enhanced (achieving 98.5% and 99.9% COD and turbidity reductions, respectively). Contact angle, zeta potential, scanning electron microscopy (SEM), and atomic force microscopy (AFM) measurements were carried out to explain the results. SEM and AFM images revealed that on the TiO2-Ag-coated membrane, a less aggregated, more continuous, homogeneous, and smoother nanolayer was formed due to the ~50% more negative zeta potential of the TiO2-Ag nanocomposite compared to that of the TiO2. In summary, via Ag addition, a sufficiently hydrophilic, beneficially negatively charged, and homogeneous TiO2-Ag-coated PVDF membrane surface was achieved, which resulted in the presented advantageous filtration properties beyond the photocatalytic activity enhancement.},
	year = {2024},
	eissn = {2297-8739},
	pages = {112},
	orcid-numbers = {Gyulavári, Tamás/0000-0001-6103-6689; Janovák, László/0000-0002-2066-319X; Veréb, Gábor/0000-0001-9642-1851}
}

@article{MTMT:34729015,
	title = {Új minimálinvazív kezelési lehetőségek jó- és rosszindulatú fül-orr-gégészeti betegségekben nanoszerkezetű hatóanyag-leadó rendszerek alkalmazásával = New minimally invasive treatment options in benign and malignant otorhinolaryngological diseases using nanostructured drug delivery systems},
	url = {https://m2.mtmt.hu/api/publication/34729015},
	author = {Szabó, Diána and Janovák, László and Abdelghafour, Mohamed M. and Takács, Tamás and Csanády, Miklós ifj. and Spengler, Gabriella and Szakács, László and Csanády, Miklós and Rovó, László},
	doi = {10.1556/650.2024.32978},
	journal-iso = {ORV HETIL},
	journal = {ORVOSI HETILAP},
	volume = {165},
	unique-id = {34729015},
	issn = {0030-6002},
	year = {2024},
	eissn = {1788-6120},
	pages = {370-378},
	orcid-numbers = {Janovák, László/0000-0002-2066-319X; Abdelghafour, Mohamed M./0000-0002-7895-4555; Spengler, Gabriella/0000-0001-8085-0950; Rovó, László/0000-0003-1782-1756}
}

@article{MTMT:34547597,
	title = {Structural and thermoanalytical characterization of self-healing polymer: the effect of cross-linking density},
	url = {https://m2.mtmt.hu/api/publication/34547597},
	author = {Takács, Tamás and Abdelghafour, Mohamed M. and Sebők, Dániel and Kukovecz, Ákos and Janovák, László},
	doi = {10.1007/s10973-023-12862-2},
	journal-iso = {J THERM ANAL CALORIM},
	journal = {JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY},
	volume = {https://doi.org/10.1007/s10973-023-12862-2},
	unique-id = {34547597},
	issn = {1388-6150},
	abstract = {The effect of the gradually formed cross-linked structure on the thermal properties and swelling behaviour of modified poly(vinyl alcohol) was investigated. To this aim, the semi-crystalline polymer was functionalized with aldehyde and amino moieties to produce polymers with dynamic imine cross-links, and, thus, with self-healing or curing ability. With increasing degree of functionalization (0.89–7.12%), denser polymer networks cross-linked by dynamic imine bonds were formed, the samples systematically developed thermoset-like properties compared to the pristine, initially thermoplastic PVA. As a result, the introduction of new moieties into the initial PVA lowered the glass transition (from 65.3 to 35.0 °C) and melting temperatures (from 194 to 161 °C), however, a new peak (T crd ) with growing enthalpy values appeared on the DSC curves, which indicates that more and more energy must be supplied in order to break the imine cross-links formed between the introduced aldehyde and amino groups. The significant impact of the degree of functionalization and cross-linking density on the polymer structure was also clearly demonstrated: the crystallinity decreased as the abundance of the introduced moieties increased and the formation of cross-links proceeded. At the same time, the water desorption enthalpies of the samples increased, suggesting a stronger, chemically cross-linked thermoset-like polymer network compared to the thermoplastic poly(vinyl alcohol).},
	year = {2024},
	eissn = {1572-8943},
	pages = {https://doi.org/10.1007/s10973-023-12862-2},
	orcid-numbers = {Abdelghafour, Mohamed M./0000-0002-7895-4555; Janovák, László/0000-0002-2066-319X}
}

@misc{MTMT:34484377,
	title = {Surfactant-Polymer Enhanced Oil Recovery Project at Algyő Field = Tenzides-Polimeres EOR Projekt Algyő mezőben},
	url = {https://m2.mtmt.hu/api/publication/34484377},
	author = {Puskás, Sándor and Törő, Mária and Vágó, Árpád and Ördög, Tibor and Tóth, Marianna and Kálmán, Gyula and Mátrai, Andrea and Nagy, Roland and Bartha, László and Hartyányi, Máté and Lakatos, István and Szentes, Gabriella and Dékány, Imre and Janovák, László and Geiger, János},
	unique-id = {34484377},
	year = {2023},
	orcid-numbers = {Hartyányi, Máté/0000-0001-6044-7689; Janovák, László/0000-0002-2066-319X; Geiger, János/0000-0001-9359-5266}
}

@article{MTMT:34154074,
	title = {Mitomycin loaded self-assembled colloidal prodrug nanoparticles for magnetic drug targeting},
	url = {https://m2.mtmt.hu/api/publication/34154074},
	author = {Amin, Keristina and Abdelghafour, Mohamed M. and Varga, Viktória and Kiss, Tamás and Szabó, Diána and Rovó, László and Janovák, László},
	doi = {10.1016/j.jddst.2023.104948},
	journal-iso = {J DRUG DELIV SCI TEC},
	journal = {JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY},
	volume = {88},
	unique-id = {34154074},
	issn = {1773-2247},
	year = {2023},
	eissn = {2588-8943},
	orcid-numbers = {Abdelghafour, Mohamed M./0000-0002-7895-4555; Varga, Viktória/0000-0001-9933-7604; Rovó, László/0000-0003-1782-1756; Janovák, László/0000-0002-2066-319X}
}

@article{MTMT:33714392,
	title = {Local hydrophobicity allows high-performance electrochemical carbon monoxide reduction to C 2+ products},
	url = {https://m2.mtmt.hu/api/publication/33714392},
	author = {Kormányos, Attila and Endrődi, Balázs and Zhang, Zheng and Samu, Angelika Anita and Mérai, László and Samu, Gergely Ferenc and Janovák, László and Janáky, Csaba},
	doi = {10.1039/D3EY00006K},
	journal-iso = {EES. CATAL},
	journal = {EES CATALYSIS},
	volume = {1},
	unique-id = {33714392},
	abstract = {Tailoring the hydrophobicity of the cathode gas diffusion electrode mitigates flooding in parallel with enhancing the selectivity of the electrochemical carbon monoxide reduction reaction.},
	year = {2023},
	eissn = {2753-801X},
	pages = {263-273},
	orcid-numbers = {Endrődi, Balázs/0000-0003-3237-9222; Samu, Gergely Ferenc/0000-0002-3239-9154; Janovák, László/0000-0002-2066-319X; Janáky, Csaba/0000-0001-5965-5173}
}

@article{MTMT:33636061,
	title = {Outstanding Separation Performance of Oil-in-Water Emulsions with TiO2/CNT Nanocomposite-Modified PVDF Membranes},
	url = {https://m2.mtmt.hu/api/publication/33636061},
	author = {Fekete, Laura and Fazekas, Ákos Ferenc and Hodúr, Cecilia and László, Zsuzsanna and Ágoston, Áron and Janovák, László and Gyulavári, Tamás and Pap, Zsolt and Hernádi, Klára and Veréb, Gábor},
	doi = {10.3390/membranes13020209},
	journal-iso = {MEMBRANES-BASEL},
	journal = {MEMBRANES (BASEL)},
	volume = {13},
	unique-id = {33636061},
	abstract = {Membrane filtration is an effective technique for separating micro- and nano-sized oil droplets from harmful oil-contaminated waters produced by numerous industrial activities. However, significant flux reduction discourages the extensive application of this technology; therefore, developing antifouling membranes is necessary. For this purpose, various titanium dioxide/carbon nanotube (TiO2/CNT) nanocomposites (containing 1, 2, and 5 wt.% multi-walled CNTs) were used for the modification of polyvinylidene fluoride (PVDF) ultrafilter (250 kDa) membrane surfaces. The effects of surface modifications were compared in relation to the flux, the filtration resistance, the flux recovery ratio, and the purification efficiency. TiO2/CNT2% composite modification reduced both irreversible and total filtration resistances the most during the filtration of 100 ppm oil emulsions. The fluxes were approximately 4–7 times higher compared to the unmodified PVDF membrane, depending on the used transmembrane pressure (510, 900, and 1340 L/m2h fluxes were measured at 0.1, 0.2, and 0.3 MPa pressures, respectively). Moreover, the flux recovery ratio (up to 68%) and the purification efficiency (95.1–99.8%) were also significantly higher because of the surface modification, and the beneficial effects were more dominant at higher transmembrane pressures. TiO2/CNT2% nanocomposites are promising to be applied to modify membranes used for oil–water separation and achieve outstanding flux, cleanability, and purification efficiency.},
	keywords = {TIO2; NANOCOMPOSITE; carbon nanotube; Membrane filtration; Microfiltration; MWCNT; nano-TiO2; PVDF; Oil emulsion; enhanced flux; reduced resistance; pressure-dependent effects},
	year = {2023},
	eissn = {2077-0375},
	orcid-numbers = {Hodúr, Cecilia/0000-0002-2028-6304; Janovák, László/0000-0002-2066-319X; Gyulavári, Tamás/0000-0001-6103-6689; Pap, Zsolt/0000-0002-8049-0809; Hernádi, Klára/0000-0001-9419-689X; Veréb, Gábor/0000-0001-9642-1851}
}

@article{MTMT:33610276,
	title = {Photocatalytic and antimicrobial activity of sulfur functionalized TiO 2 containing composite films},
	url = {https://m2.mtmt.hu/api/publication/33610276},
	author = {Ágoston, Áron and Balassa, Lilla and Imre-Deák, Ágota and Samu, Gergely Ferenc and Tallósy, Szabolcs Péter and Gombár, Gyöngyi and Janovák, László},
	doi = {10.1002/ceat.202200489},
	journal-iso = {CHEM ENG TECHNOL},
	journal = {CHEMICAL ENGINEERING & TECHNOLOGY},
	volume = {46},
	unique-id = {33610276},
	issn = {0930-7516},
	abstract = {Facile sulfation of TiO2 semiconductor photocatalyst was achieved by a simple grinding and calcination method using elemental sulfur from desulfurization of petroleum. The successful sulfation of the prepared visible-light-active photocatalyst was also proved by infrared and X-ray photoelectron spectroscopic measurements. Photocatalytic tests revealed that the most efficient member of the series has higher photocatalytic activity than TiO2 in the photodegradation of formic acid under both UV and visible-light activation. Moreover, the improved electrokinetic and water dispersibility behaviors of the sulfur-modified photocatalyst allowed the preparation of polyacrylate-based photoreactive thin films with increased photocatalytic activity, strong antimicrobial properties, and improved mechanical behavior.},
	year = {2023},
	eissn = {1521-4125},
	pages = {927-933},
	orcid-numbers = {Balassa, Lilla/0000-0003-1409-3327; Imre-Deák, Ágota/0000-0002-6781-1727; Samu, Gergely Ferenc/0000-0002-3239-9154; Tallósy, Szabolcs Péter/0000-0001-7150-452X; Janovák, László/0000-0002-2066-319X}
}

@article{MTMT:33606755,
	title = {Hydrothermal Co-Crystallization of Novel Copper Tungstate-Strontium Titanate Crystal Composite for Enhanced Photocatalytic Activity and Increased Electron–Hole Recombination Time},
	url = {https://m2.mtmt.hu/api/publication/33606755},
	author = {Ágoston, Áron and Janovák, László},
	doi = {10.3390/catal13020287},
	journal-iso = {CATALYSTS},
	journal = {CATALYSTS},
	volume = {13},
	unique-id = {33606755},
	abstract = {The development of catalysts continues to have a significant influence on science today since we can utilize them to efficiently destroy some contaminants. A study in this field is justified because there is a dearth of comprehensive literature on the creation of SrTiO3-based photocatalysts. Related to this topic, here we report the facile preparation of a structure-modified SrTiO3 photocatalyst, by incorporating CuWO4. Within the case of the CuWO4-modified samples (0.5–3 wt% nominal CuWO4 content), the photo-oxidation of phenol, as a contaminant, was more than two times higher than the initial SrTiO3. However, the photocatalytic activity does not change linearly with increasing CuWO4 content, and the CWS2.5 (2.5 wt% nominal CuWO4 content and 4.25 wt% measured content) has the highest photo-activity under the applied conditions. The reason for the better activity was the increased recombination time of charge separation on the catalyst surface. Slower recombination can result in more water being oxidized to hydroxyl radicals, leading to the faster decomposition of the phenol.},
	year = {2023},
	eissn = {2073-4344},
	pages = {287},
	orcid-numbers = {Ágoston, Áron/0000-0001-9280-3406; Janovák, László/0000-0002-2066-319X}
}

@article{MTMT:33543168,
	title = {Binding of Ca2+ Ions to Alkylbenzene Sulfonates: Micelle Formation, Second Critical Concentration and Precipitation},
	url = {https://m2.mtmt.hu/api/publication/33543168},
	author = {Ádám, Anna Adél and Ziegenheim, Szilveszter and Janovák, László and Szabados, Márton and Bús, Csaba and Kukovecz, Ákos and Kónya, Zoltán and Dékány, Imre and Sipos, Pál Miklós and Kutus, Bence},
	doi = {10.3390/ma16020494},
	journal-iso = {MATERIALS},
	journal = {MATERIALS},
	volume = {16},
	unique-id = {33543168},
	abstract = {Anionic surfactants, such as sodium linear alkylbenzene sulfonates (NaLAS), are utilized in various fields, including industry, household, and agriculture. The efficiency of their use in aqueous environments is significantly affected by the presence of cations, Ca2+ and Mg2+ in particular, as they can decrease the concentration of the surfactant due to precipitation. To understand cation–sulfonate interactions better, we study both NaLAS colloidal solutions in the presence of CaCl2 and precipitates forming at higher salt concentrations. Upon addition of CaCl2, we find the surface tension and critical micelle concentration of NaLAS to decrease significantly, in line with earlier findings for alkylbenzylsulfonates in the presence of divalent cations. Strikingly, an increase in the surface tension is discernible above 0.6 g L–1 NaLAS, accompanied by the decrease of apparent micelle sizes, which in turn gives rise to transparent systems. Thus, there appears to be a second critical concentration indicating another micellar equilibrium. Furthermore, the maximum salt tolerance of the surfactant is 0.1 g L–1 Ca2+, above which rapid precipitation occurs yielding sparingly soluble CaLAS2∙2H2O.},
	year = {2023},
	eissn = {1996-1944},
	orcid-numbers = {Janovák, László/0000-0002-2066-319X; Szabados, Márton/0000-0002-7588-335X; Bús, Csaba/0000-0002-4515-8317; Kukovecz, Ákos/0000-0003-0716-9557; Kónya, Zoltán/0000-0002-9406-8596; Dékány, Imre/0000-0001-5472-5355; Sipos, Pál Miklós/0000-0003-1407-0950; Kutus, Bence/0000-0001-5023-0152}
}