TY - JOUR AU - Martiz Chalen, Jose Alejandro AU - Farkas, Attila AU - Károly, Zoltán AU - Paiva Franguelli, Fernanda AU - Samaniego Andrade, Samantha Kathiuska AU - Kállay-Menyhárd, Alfréd AU - Kótai, László TI - Raman studies on carbon-containing phases in nanosized-ZrO2/C and nanosized-(ZrC,ZrO2)/C composites JF - NANO STUDIES J2 - NANO STUDIES VL - 21-22 PY - 2022 SP - 177 EP - 186 PG - 10 SN - 1987-8826 DO - 10.52340/ns.2022.07 UR - https://m2.mtmt.hu/api/publication/34502641 ID - 34502641 LA - English DB - MTMT ER - TY - THES AU - Paiva Franguelli, Fernanda TI - Synthesis and properties of transition metal complexes having reducing ligands and oxidizing anions: ammine and pyridine complexes of silver and cobalt PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2022 SP - 134 UR - https://m2.mtmt.hu/api/publication/33353918 ID - 33353918 LA - English DB - MTMT ER - TY - JOUR AU - Nagyné Bereczki, Laura AU - Petruševski, Vladimir M. AU - Paiva Franguelli, Fernanda AU - Béres, Kende Attila AU - Farkas, Attila AU - Holló, Berta Barta AU - Czégény, Zsuzsanna AU - Szilágyi, Imre Miklós AU - Kótai, László TI - [Hexaamminecobalt(III)] Dichloride Permanganate—Structural Features and Heat-Induced Transformations into (CoII,MnII)(CoIII,MnIII)2O4 Spinels JF - INORGANICS J2 - INORGANICS VL - 10 PY - 2022 IS - 12 PG - 26 SN - 2304-6740 DO - 10.3390/inorganics10120252 UR - https://m2.mtmt.hu/api/publication/33300747 ID - 33300747 N1 - Funding Agency and Grant Number: European Union; State of Hungary; European Regional Development Fund [VEKOP-2.3.2-16-2017-00013]; New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund [UNKP-21-3, UNKP-22-3]; National Research Development and Innovation Office through OTKA grant [K124544]; Ministry of Education, Science, and Technological Development of the Republic of Serbia [451-03-68/2022-14/200125] Funding text: The research was supported by the European Union and the State of Hungary, co-financed by the European Regional Development Fund (VEKOP-2.3.2-16-2017-00013) (L.K.) and the UNKP-21-3 and 22-3 New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund (K.A.B.) and the National Research Development and Innovation Office through OTKA grant K124544. B.B.H. thanks to the Ministry of Education, Science, and Technological Development of the Republic of Serbia (Grant No. 451-03-68/2022-14/200125) for funding. AB - We synthesized and characterized (IR, Raman, UV, SXRD) hexaamminecobalt(III) dichloride permanganate, [Co(NH3)6]Cl2(MnO4) (compound 1) as the precursor of Co–Mn–spinel composites with atomic ratios of Co:Mn = 1:1 and 1:3. The 3D−hydrogen bond network includes N–HO–Mn and N–HCl interactions responsible for solid-phase redox reactions between the permanganate anions and ammonia ligands. The temperature-limited thermal decomposition of compound 1 under the temperature of boiling toluene (110 ∘C) resulted in the formation of (NH4)4Co2Mn6O12. which contains a todorokite-like manganese oxide network (MnII4MnIII2O1210−). The heat treatment products of compounds 1 and [Co(NH3)5Cl](MnO4)2 (2) synthesized previously at 500 ∘C were a cubic and a tetragonal spinel with Co1.5Mn1.5O4 and CoMn2O4 composition, respectively. The heating of the decomposition product of compounds 1 and 2 that formed under refluxing toluene (a mixture with an atomic ratio of Co:Mn = 1:1 and 1:2) and after aqueous leaching ((NH4)4Co2Mn6O12, 1:3 Co:Mn atomic ratio in both cases) at 500 ∘C resulted in tetragonal Co0.75Mn2.25O4 spinels. The Co1.5Mn1.5O4 prepared from compound 1 at 500 ∘C during the solid-phase decomposition catalyzes the degradation of Congo red with UV light. The decomposition rate of the dye was found to be nine times faster than in the presence of the tetragonal CoMn2O4 spinel prepared in the solid-phase decomposition of compound 2. The todorokite-like intermediate prepared from compound 1 under N2 at 115 ∘C resulted in a 54 times faster degradation of Congo red, which is a great deal faster than the same todorokite-like phase that formed from compound 2 under N2. LA - English DB - MTMT ER - TY - CHAP AU - Paiva Franguelli, Fernanda AU - Béres, Kende Attila AU - Kótai, László ED - Duncan, H. Gregory TI - Pyridinesilver Tetraoxometallate Complexes: Overview of the Synthesis, Structure, and Properties of Pyridine Complexed AgXO4 (X = Cl, Mn, Re) Compounds T2 - Cornerstones in Contemporary Inorganic Chemistry PB - MDPI CY - Basel SN - 9783036557052 PY - 2022 SP - 251 EP - 263 PG - 13 SN - 9783036557052 UR - https://m2.mtmt.hu/api/publication/33299135 ID - 33299135 N1 - Eredeti közlés: INORGANICS 2021, 9, 79. DOI: 10.3390/inorganics9110079 LA - English DB - MTMT ER - TY - JOUR AU - Paiva Franguelli, Fernanda AU - Kováts, Éva AU - Czégény, Zsuzsanna AU - Nagyné Bereczki, Laura AU - Petruševski, Vladimir M. AU - Holló, Berta Barta AU - Béres, Kende Attila AU - Farkas, Attila AU - Szilágyi, Imre Miklós AU - Kótai, László TI - Multi-Centered Solid-Phase Quasi-Intramolecular Redox Reactions of [(Chlorido)Pentaamminecobalt(III)] Permanganate—An Easy Route to Prepare Phase Pure CoMn2O4 Spinel JF - INORGANICS J2 - INORGANICS VL - 10 PY - 2022 IS - 2 PG - 22 SN - 2304-6740 DO - 10.3390/inorganics10020018 UR - https://m2.mtmt.hu/api/publication/32651012 ID - 32651012 LA - English DB - MTMT ER - TY - JOUR AU - Paiva Franguelli, Fernanda AU - Béres, Kende Attila AU - Kótai, László TI - Pyridinesilver Tetraoxometallate Complexes: Overview of the Synthesis, Structure, and Properties of Pyridine Complexed AgXO4 (X = Cl, Mn, Re) Compounds JF - INORGANICS J2 - INORGANICS VL - 9 PY - 2021 IS - 11 PG - 13 SN - 2304-6740 DO - 10.3390/inorganics9110079 UR - https://m2.mtmt.hu/api/publication/32479754 ID - 32479754 N1 - Cited By :1 Export Date: 8 June 2022 Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Hungary; email: kotai.laszlo@ttk.hu Funding details: European Commission, EC Funding details: European Regional Development Fund, ERDF, VEKOP-2.3.2-16-2017-00013 Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA, ÚNKP-21-3 Funding details: Innovációs és Technológiai Minisztérium Funding text 1: This research was funded by the European Union and the State of Hungary, co-financed by the European Regional Development Fund, grant number VEKOP-2.3.2-16-2017-00013 and New National Excellence program of the Ministry for Innovation and Technology from the source of the National Research, Development, and Innovation Fund, grant number ÚNKP-21-3. AB - We reviewed the synthesis, structure, and properties of pyridine complexes of AgXO4 (X = Cl, Mn, and Re) compounds with various compositions ([AgPy2 ] XO4, [AgPy2 XO4 ]·0.5Py, [AgPy4 ] XO4, and 4 [AgPy2 XO4 ] [AgPy4 ] XO4 ). We also clarified the controversial information about the existence and composition of pyridine complexes of silver permanganate, used widely as mild and selective oxidants in organic chemistry. We discussed in detail the available structural and spectroscopic (IR, Raman, and UV) data and thermal behavior, including the existence and consequence of quasi-intramolecular reactions between the reducing ligand and anions containing oxygen. LA - English DB - MTMT ER - TY - JOUR AU - Béres, Kende Attila AU - Sajó, István AU - Lendvay, György AU - Trif, László AU - Petruševski, VM. AU - Barta-Holló, B AU - Korecz, László AU - Paiva Franguelli, Fernanda AU - Nagyné László, Krisztina AU - Szilágyi, Imre Miklós AU - Kótai, László TI - Solid-Phase “Self-Hydrolysis” of [Zn(NH3)4MoO4@2H2O] Involving Enclathrated Water—An Easy Route to a Layered Basic Ammonium Zinc Molybdate Coordination Polymer JF - MOLECULES J2 - MOLECULES VL - 26 PY - 2021 IS - 13 PG - 19 SN - 1420-3049 DO - 10.3390/molecules26134022 UR - https://m2.mtmt.hu/api/publication/32089016 ID - 32089016 LA - English DB - MTMT ER - TY - JOUR AU - Alexandre Fogaca, Lara AU - Nagyné Bereczki, Laura AU - Petruševski, VM. AU - Barta-Holló, B AU - Paiva Franguelli, Fernanda AU - Mohai, Miklós AU - Béres, Kende Attila AU - Sajó, István AU - Szilágyi, Imre Miklós AU - Kótai, László TI - A Quasi-Intramolecular Solid-Phase Redox Reaction of Ammonia Ligands and Perchlorate Anion in Diamminesilver(I) Perchlorate JF - INORGANICS J2 - INORGANICS VL - 9 PY - 2021 IS - 5 PG - 19 SN - 2304-6740 DO - 10.3390/inorganics9050038 UR - https://m2.mtmt.hu/api/publication/32008901 ID - 32008901 N1 - Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Budapest, H-1117, Hungary Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Muegyetem rakpart 3, Budapest, H-1111, Hungary Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, 1000, North Macedonia Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovi´ca 3, Novi Sad, 21000, Serbia Szentagothai Research Centre, Environmental Analytical and Geoanalytical Research Group, University of Pécs, Ifjúság útja 20, Pécs, H-7624, Hungary Deuton-X Ltd, Selmeci u. 89, Érd, H-2030, Hungary Cited By :10 Export Date: 11 April 2023 Correspondence Address: Kotai, L.; Research Centre for Natural Sciences, Magyar Tudósok krt 2, Hungary; email: kotai.laszlo@ttk.hu LA - English DB - MTMT ER - TY - JOUR AU - Trif, László AU - Paiva Franguelli, Fernanda AU - Lendvay, György AU - Majzik, E AU - Béres, Kende Attila AU - Nagyné Bereczki, Laura AU - Szilágyi, Imre Miklós AU - Pawar, RP. AU - Kótai, László TI - Thermal analysis of solvatomorphic decakis (dimethylammonium) dihydrogendodecatungstate hydrates JF - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY J2 - J THERM ANAL CALORIM VL - 144 PY - 2021 SP - 81 EP - 90 PG - 10 SN - 1388-6150 DO - 10.1007/s10973-020-10494-4 UR - https://m2.mtmt.hu/api/publication/31866491 ID - 31866491 N1 - Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH, Magyar Tudósok krt 2, Budapest, Hungary Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, 1111, Hungary Department of Chemistry, Deogiri College, Station Road, Aurangabad, 431005, India Deuton-X Ltd, Selmeci u. 89, Érd, 2030, Hungary Cited By :1 Export Date: 10 March 2021 CODEN: JTACF Correspondence Address: Franguelli, F.P.; Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Hungary; email: fernandapaivafranguelli@edu.bme.hu Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Hungary; email: kotai.laszlo@ttk.hu Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: European Commission, EC Funding details: Hungarian Scientific Research Fund, OTKA, K-115762, K-124544 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: European Regional Development Fund, FEDER Funding text 1: The research within Project No. VEKOP-2.3.2-16-2017-00013 was supported by the European Union and the State of Hungary, co-financed by the European Regional Development Fund. N. V. M. and P. B. are grateful to the Hungarian Scientific Research Fund (K-124544 and K-115762). An NRDI K 124212 and an NRDI TNN_16 123631 Grants are acknowledged. The research reported in this paper was supported by the Higher Education Excellence Program of the Ministry of Human Capacities in the frame of Nanotechnology and Materials Science research area of Budapest University of Technology (BME FIKP-NAT). Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, ELKH, Magyar Tudósok krt 2, Budapest, Hungary Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, 1111, Hungary Department of Chemistry, Deogiri College, Station Road, Aurangabad, 431005, India Deuton-X Ltd, Selmeci u. 89, Érd, 2030, Hungary Cited By :1 Export Date: 11 March 2021 CODEN: JTACF Correspondence Address: Franguelli, F.P.; Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Hungary; email: fernandapaivafranguelli@edu.bme.hu Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Hungary; email: kotai.laszlo@ttk.hu Funding details: Budapesti Műszaki és Gazdaságtudományi Egyetem, BME Funding details: European Commission, EC Funding details: Hungarian Scientific Research Fund, OTKA, K-115762, K-124544 Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: European Regional Development Fund, FEDER Funding text 1: The research within Project No. VEKOP-2.3.2-16-2017-00013 was supported by the European Union and the State of Hungary, co-financed by the European Regional Development Fund. N. V. M. and P. B. are grateful to the Hungarian Scientific Research Fund (K-124544 and K-115762). An NRDI K 124212 and an NRDI TNN_16 123631 Grants are acknowledged. The research reported in this paper was supported by the Higher Education Excellence Program of the Ministry of Human Capacities in the frame of Nanotechnology and Materials Science research area of Budapest University of Technology (BME FIKP-NAT). Funding Agency and Grant Number: Budapest University of Technology and Economics Funding text: Open Access funding provided by Budapest University of Technology and Economics. LA - English DB - MTMT ER - TY - JOUR AU - Lendvay, György AU - Majzik, Eszter AU - Nagyné Bereczki, Laura AU - Domján, Attila AU - Trif, László AU - Sajó, István AU - Paiva Franguelli, Fernanda AU - Farkas, Attila AU - Klébert, Szilvia AU - Bombicz, Petra AU - Németh, Csaba AU - Szilágyi, Imre Miklós AU - Kótai, László TI - (Me 2 NH 2 ) 10 [H 2 -Dodecatungstate] polymorphs: dodecatungstate cages embedded in a variable dimethylammonium cation + water of crystallization matrix JF - RSC ADVANCES J2 - RSC ADV VL - 11 PY - 2021 IS - 6 SP - 3713 EP - 3724 PG - 12 SN - 2046-2069 DO - 10.1039/d0ra09997j UR - https://m2.mtmt.hu/api/publication/31819362 ID - 31819362 N1 - Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, H-1117, Hungary University of Technology and Economics, Department of Inorganic and Analytical Chemistry, Budapest, H-1111, Hungary University of Pécs, János Szentágothai Research Centre, Pécs, H-7624, Hungary University of Technology and Economics, Department of Organic Chemistry, Budapest, H-1111, Hungary Deuton-X Ltd., Selmeci u. 89, Érd, H-2030, Hungary Export Date: 11 March 2021 CODEN: RSCAC Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Hungary; email: kotai.laszlo@ttk.mta.hu Correspondence Address: Kótai, L.; Deuton-X Ltd., Selmeci u. 89, Hungary; email: kotai.laszlo@ttk.mta.hu Funding details: K-115762, K-124544 Funding details: BME IE-NAT TKP2020 Funding details: European Commission, EC Funding details: Magyar Tudományos Akadémia, MTA, ÚNKP-18-4-BME-238 Funding details: European Regional Development Fund, FEDER Funding text 1: The research within projects No. VEKOP-2.3.2-16-2017-00013 and GINOP-2.2.1-15-2017-00084 was supported by the European Union and the State of Hungary, co-nanced by the European Regional Development Fund. N. V. M. and P. B. are grateful for grants by the Hungarian Scientic Research Found (K-124544 and K-115762). The K-124212 and an NRDI TNN_16 123631 grants are also acknowledged. I. M. S. thanks the Hungarian Academy of Sciences for a János Bolyai Research Fellowship and acknowledges the ÚNKP-18-4-BME-238 grant supported by the New National Excellence Program of the Ministry of Human Capacities, Hungary. An NRDI K 124212 and an NRDI TNN_16 123631 grants are acknowledged. The research reported in this paper was supported by the BME Nanotechnology and Materials Science TKP2020 IE grant of NKFIH Hungary (BME IE-NAT TKP2020). Funding Agency and Grant Number: European UnionEuropean Commission [GINOP-2.2.1-15-2017-00084, VEKOP-2.3.2-16-2017-00013]; State of Hungary; European Regional Development FundEuropean Commission; Hungarian Scientific Research FoundOrszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K-124544, K-115762]; NRDI [K 124212, TNN_16 123631]; Hungarian Academy of SciencesHungarian Academy of Sciences; New National Excellence Program of the Ministry of Human Capacities, Hungary [uNKP-18-4-BME-238]; BME Nanotechnology and Materials Science TKP2020 IE grant of NKFIH Hungary (BME IE-NAT TKP2020); [K-124212]; [NRDI TNN_16 123631] Funding text: The research within projects No. VEKOP-2.3.2-16-2017-00013 and GINOP-2.2.1-15-2017-00084 was supported by the European Union and the State of Hungary, co-financed by the European Regional Development Fund. N. V. M. and P. B. are grateful for grants by the Hungarian Scientific Research Found (K-124544 and K-115762). The K-124212 and an NRDI TNN_16 123631 grants are also acknowledged. I. M. S. thanks the Hungarian Academy of Sciences for a Janos Bolyai Research Fellowship and acknowledges the uNKP-18-4-BME-238 grant supported by the New National Excellence Program of the Ministry of Human Capacities, Hungary. An NRDI K 124212 and an NRDI TNN_16 123631 grants are acknowledged. The research reported in this paper was supported by the BME Nanotechnology and Materials Science TKP2020 IE grant of NKFIH Hungary (BME IE-NAT TKP2020). LA - English DB - MTMT ER -