TY - JOUR AU - Homonnay, Z AU - Stichleutner, S AU - Kuzmann, E AU - Kuti, M AU - Láng, G. Győző AU - Béres, Kende Attila AU - Trif, László AU - Nagy, JD AU - Záray, Gy AU - Lendvay, J TI - Quantitative Analysis of Ferrate(VI) and Its Degradation Products in Electrochemically Produced Potassium Ferrate for Waste Water Treatment JF - APPLIED SCIENCES-BASEL J2 - APPL SCI-BASEL VL - 14 PY - 2024 IS - 19 PG - 19 SN - 2076-3417 DO - 10.3390/app14199144 UR - https://m2.mtmt.hu/api/publication/35444160 ID - 35444160 LA - English DB - MTMT ER - TY - JOUR AU - SHIVA SHANKAR, LAKSHMI AU - Samaniego Andrade, Samantha Kathiuska AU - Nagyné László, Krisztina AU - Zalka, Dóra AU - Nagy, Péter B. AU - Szabados, Márton AU - Pászti, Zoltán AU - Balázsi, Katalin AU - Czigány, Zsolt AU - Illés, Levente AU - Kun, Róbert TI - A fresh perspective to synthesizing and designing carbon/sulfur composite cathodes using supercritical CO2 technology for advanced Li-S battery cathodes JF - JOURNAL OF ALLOYS AND COMPOUNDS J2 - J ALLOY COMPD VL - 1008 PY - 2024 PG - 16 SN - 0925-8388 DO - 10.1016/j.jallcom.2024.176691 UR - https://m2.mtmt.hu/api/publication/35425689 ID - 35425689 N1 - CODEN: JALCE AB - The morphology and surface chemistry of the sulfur host within lithium-sulfur (Li-S) batteries significantly influence the overall battery performance. To investigate this relationship, we employed a non-toxic heat treatment to produce reduced graphene oxide (rGO) with varying degrees of reduction, resulting in distinct surface chemistries. The physicochemical characteristics and electrochemical properties of four differently reduced GO samples and rGO/sulfur composite cathodes developed with supercritical CO2 technology were examined. Our study established a clear correlation between the specific surface area and porosity of rGO and the electrochemical performance of the corresponding rGO/sulfur composite cathodes. Notably, rGO samples reduced at 350°C (rGO350) exhibited superior discharge capacity and long-term cycling stability compared to those reduced at higher temperatures. This performance enhancement can be attributed to the combination of high surface area, porosity, and an open morphology in rGO350. These findings underscore the importance of optimizing carbon chemistry, microstructure, and cathode synthesis strategies in Li-S batteries. By effectively controlling sulfur loading and distribution within the rGO network, we can enhance active material utilization, boost electronic conductivity, and ensure the long-term stability of rGO/sulfur composite cathodes. Our research suggests that SC-CO2-assisted synthesis offers a promising approach for designing high-performance carbon/sulfur composite cathodes for Li-S batteries. This method provides a versatile platform for tailoring the rGO morphology and surface chemistry, optimizing battery performance. By carefully considering the interplay between these factors, we can unlock the full potential of Li-S batteries for various applications. LA - English DB - MTMT ER - TY - CONF AU - Béres, Kende Attila AU - Homonnay, Z AU - Nagyné Bereczki, Laura AU - Kvitek, L AU - Németh, P AU - Kótai, László TI - Synthesis of controlled nanoscale catalysts from complex transition metal salts by quasi-intramolecular redox reactions T2 - ISIAME 2024, International Sympsoium on the Industrial Applications of the Mössbauer Effect C1 - Kitakyushu PY - 2024 SP - C4 EP - C4 PG - 1 UR - https://m2.mtmt.hu/api/publication/35388190 ID - 35388190 LA - English DB - MTMT ER - TY - CONF AU - Béres, Kende Attila AU - Homonnay, Z AU - Nagyné Bereczki, Laura AU - Dürvanger, Zs AU - Czégény, Zsuzsanna AU - Kvitek, L AU - Kótai, László TI - Synthesis of controlled nanoscale transition metal oxide catalysts by heat-induced quasi-intramolecular redox reactions T2 - ICCC 2024, 45th International Conference on Coordination Chemistry Abstract Book PY - 2024 SP - 323 EP - 323 PG - 1 UR - https://m2.mtmt.hu/api/publication/35388120 ID - 35388120 LA - English DB - MTMT ER - TY - JOUR AU - Kótai, László AU - Béres, Kende Attila AU - Farkas, Attila AU - Holló, Berta Barta AU - Petruševski, Vladimir M. AU - Homonnay, Zoltán AU - Trif, László AU - Paiva Franguelli, Fernanda AU - Nagyné Bereczki, Laura TI - An Unprecedented Tridentate-Bridging Coordination Mode of Permanganate Ions: The Synthesis of an Anionic Coordination Polymer—[CoIII(NH3)6]n[(K(κ1-Cl)2(μ2,2′,2″-(κ3-O,O′,O″-MnO4)2)n∞]—Containing Potassium Central Ion and Chlorido and Permanganato Ligands JF - MOLECULES J2 - MOLECULES VL - 29 PY - 2024 IS - 18 PG - 23 SN - 1420-3049 DO - 10.3390/molecules29184443 UR - https://m2.mtmt.hu/api/publication/35336546 ID - 35336546 N1 - Institute of Materials and Environmental Chemistry, HUN-REN Research Centre for Natural Sciences, Budapest, H-1117, Hungary György Hevesy PhD School of Chemistry, ELTE Eötvös Loránd University, Budapest, H-1117, Hungary Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Faculty of Sciences, University of Novi Sad, Novi Sad, 21000, Serbia Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, MK-1000, North Macedonia Institute of Chemistry, ELTE Eötvös Loránd University, Budapest, H-1117, Hungary Chemical Crystallography Research Laboratory, Centre for Structural Science, HUN-REN Research Centre for Natural Sciences, Budapest, H-1117, Hungary Export Date: 7 October 2024 CODEN: MOLEF Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Hungary; email: kotai.laszlo@ttk.hu Chemicals/CAS: ammonia, 14798-03-9, 51847-23-5, 7664-41-7; cobalt, 7440-48-4; nitrate, 14797-55-8; nitric acid, 7697-37-2; potassium, 7440-09-7; potassium chloride, 7447-40-7; toluene, 108-88-3 AB - A unique compound (compound 1) with structural features including an unprecedented tridentate-bridging coordination mode of permanganate ions and an eight-coordinated (rhombohedral) κ1-chlorido and tridentate permanganato ligand in a potassium complex containing coordination polymer (CoIII(NH3)6]n[(K(κ1-Cl)2(μ2,2′,2″-(κ3-O,O′,O″-MnO4)2)n∞) with isolated regular octahedral hexamminecobalt(III) cation was synthesized with a yield of >90%. The structure was found to be stabilized by mono and bifurcated N-H∙∙∙Cl and N-H∙∙∙O (bridging and non-bridging) hydrogen bonds. Detailed spectroscopic (IR, far-IR, and Raman) studies and correlation analysis were performed to assign all vibrational modes. The existence of a resonance Raman effect of compound 1 was also observed. The thermal decomposition products at 500 °C were found to be tetragonal nano-CoMn2O4 spinel with 19–25 nm crystallite size and KCl. The decomposition intermediates formed in toluene at 110 °C showed the presence of a potassium- and chloride-containing intermediates combined into KCl during aqueous leaching, together with the formation of cobalt(II) nitrate hexahydrate. This means that the CoIII–CoII redox reaction and the complete decomposition of the permanganate ions occurred in the first decomposition step, with a partial oxidation of ammonia into nitrate ions. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, Benjámin AU - Földes, Tamás AU - Szabó, Márk AU - Dorkó, Éva AU - Kótai, Bianka AU - Laczkó, Gergely AU - Holczbauer, Tamás AU - Domján, Attila AU - Pápai, Imre AU - Soós, Tibor TI - Illuminating the multiple Lewis acidity of triaryl-boranes via atropisomeric dative adducts JF - CHEMICAL SCIENCE J2 - CHEM SCI VL - 15 PY - 2024 SP - 15679 EP - 15689 PG - 11 SN - 2041-6520 DO - 10.1039/D4SC00925H UR - https://m2.mtmt.hu/api/publication/35313326 ID - 35313326 AB - The emergence of a peculiar molecular phenomenon, the single-centered, but multiple Lewis acidity, is uncovered among Lewis acidic boranes with appropriate steric crowding and symmetry design. LA - English DB - MTMT ER - TY - JOUR AU - Maluck, Sara AU - Bobrovsky, Rivka AU - Poór, Miklós AU - Lange, Roman W. AU - Steinmetzer, Torsten AU - Jerzsele, Ákos AU - Adorján, András AU - Bajusz, Dávid AU - Rácz, Anita AU - Pászti-Gere, Erzsébet TI - In Vitro Evaluation of Antipseudomonal Activity and Safety Profile of Peptidomimetic Furin Inhibitors JF - BIOMEDICINES J2 - BIOMEDICINES VL - 12 PY - 2024 IS - 9 PG - 17 SN - 2227-9059 DO - 10.3390/biomedicines12092075 UR - https://m2.mtmt.hu/api/publication/35295180 ID - 35295180 N1 - Department of Pharmacology and Toxicology, University of Veterinary Medicine, Hungary István utca 2, Budapest, H-1078, Hungary Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, Pécs, H-7624, Hungary Molecular Medicine Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs, H-7624, Hungary Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University, Marbacher Weg 6, Marburg, 35032, Germany National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine, István utca 2, Budapest, H-1078, Hungary Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária krt. 23-25, Budapest, H-1143, Hungary Medicinal Chemistry Research Group and Drug Innovation Centre, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, Budapest, H-1117, Hungary Plasma Chemistry Research Group, HUN-REN Research Centre for Natural Sciences, Magyar tudósok krt. 2, Budapest, H-1117, Hungary Export Date: 7 October 2024 Correspondence Address: Pászti-Gere, E.; Department of Pharmacology and Toxicology, Hungary István utca 2, Hungary; email: gere.erzsebet@univet.hu AB - Inhibitors of the serine protease furin have been widely studied as antimicrobial agents due to their ability to block the cleavage and activation of certain viral surface proteins and bacterial toxins. In this study, the antipseudomonal effects and safety profiles of the furin inhibitors MI-1851 and MI-2415 were assessed. Fluorescence quenching studies suggested no relevant binding of the compounds to human serum albumin and α1-acid glycoprotein. Both inhibitors demonstrated significant antipseudomonal activity in Madin–Darby canine kidney cells, especially compound MI-1851 at very low concentrations (0.5 µM). Using non-tumorigenic porcine IPEC-J2 cells, neither of the two furin inhibitors induced cytotoxicity (CCK-8 assay) or altered significantly the intracellular (Amplex Red assay) or extracellular (DCFH-DA assay) redox status even at a concentration of 100 µM. The same assays with MI-2415 conducted on primary human hepatocytes also resulted in no changes in cell viability and oxidative stress at up to 100 µM. Microsomal and hepatocyte-based CYP3A4 activity assays showed that both inhibitors exhibited a concentration-dependent inhibition of the isoenzyme at high concentrations. In conclusion, this study indicates a good safety profile of the furin inhibitors MI-1851 and MI-2415, suggesting their applicability as antimicrobials for further in vivo investigations, despite some inhibitory effects on CYP3A4. LA - English DB - MTMT ER - TY - JOUR AU - Eskola, Arkke J. AU - Pekkanen, Timo T. AU - Salomaa, Pyry S. AU - Lendvay, György AU - Timonen, Raimo S. TI - Revising the kinetics of the n-C3H7+O2 reaction: A combined experimental and computational study JF - PROCEEDINGS OF THE COMBUSTION INSTITUTE J2 - P COMBUST INST VL - 40 PY - 2024 IS - 1-4 PG - 7 SN - 1540-7489 DO - 10.1016/j.proci.2024.105377 UR - https://m2.mtmt.hu/api/publication/35288223 ID - 35288223 N1 - Cited by: 0; All Open Access, Hybrid Gold Open Access LA - English DB - MTMT ER - TY - JOUR AU - Pekkanen, Timo T. AU - Valkai, Laszlo AU - Lendvay, György AU - Timonen, Raimo S. AU - Eskola, Arkke J. TI - Kinetics of the reactions between propargylic radicals and oxygen molecules: Experiments, master-equation simulations, and reanalysis of literature data JF - COMBUSTION AND FLAME J2 - COMBUST FLAME VL - 265 PY - 2024 PG - 14 SN - 0010-2180 DO - 10.1016/j.combustflame.2024.113467 UR - https://m2.mtmt.hu/api/publication/35267333 ID - 35267333 N1 - Cited by: 0 LA - English DB - MTMT ER - TY - JOUR AU - Pekkanen, Timo T. AU - Ramu, Elli A. AU - Timonen, Raimo S. AU - Eskola, Arkke J. AU - Lendvay, György TI - Addition and elimination reactions on the C 4 H '9 potential-energy surface: Experiments and master-equation analysis of literature data JF - PROCEEDINGS OF THE COMBUSTION INSTITUTE J2 - P COMBUST INST VL - 40 PY - 2024 IS - 1-4 PG - 7 SN - 1540-7489 DO - 10.1016/j.proci.2024.105267 UR - https://m2.mtmt.hu/api/publication/35267332 ID - 35267332 N1 - Cited by: 0 LA - English DB - MTMT ER -