TY - JOUR AU - Mehrotra, RN TI - Review on the Chemistry of [M(NH3)n](XO4)m (M = Transition Metal, X = Mn, Tc or Re, n=1-6, m=1-3) Ammine Complexes JF - INORGANICS J2 - INORGANICS VL - 11 PY - 2023 IS - 7 PG - 38 SN - 2304-6740 DO - 10.3390/inorganics11070308 UR - https://m2.mtmt.hu/api/publication/34196922 ID - 34196922 N1 - Export Date: 11 March 2024 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 - JOUR AU - Martiz Chalen, Jose Alejandro AU - Károly, Zoltán AU - Trif, László AU - Mohai, Miklós AU - Nagyné Bereczki, Laura AU - Németh, Péter AU - Molnár, Zsombor AU - Kállay-Menyhárd, Alfréd AU - Pawar, RP. AU - Tekale, S AU - Kótai, László TI - Plasma-assisted preparation of nano-(ZrC, ZrO2)@carbon composites from Zr-loaded sulfonated styrene–divinylbenzene copolymers JF - JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY J2 - J THERM ANAL CALORIM VL - 147 PY - 2022 IS - 17 SP - 9353 EP - 9365 PG - 13 SN - 1388-6150 DO - 10.1007/s10973-022-11236-4 UR - https://m2.mtmt.hu/api/publication/32694227 ID - 32694227 N1 - Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rakpart 3, Budapest, 1111, Hungary Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Budapest, 1111, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network, Budaörsi út 45, Budapest, 1111, Hungary Research Institute of Biomolecular and Chemical Engineering, Nanolab, University of Pannonia, Egyetem út 10, Veszprém, 8200, Hungary Shiv Chhatrapati College, N-3, CIDCO, Maharashtra, Aurangabad, 431 003, India Department of Chemistry, Deogiri College, Maharashtra, Aurangabad, 431 005, India Deuton-X Ltd, Selmeci u. 89, Érd, Pest, 2030, Hungary Export Date: 2 May 2022 CODEN: JTACF Correspondence Address: Kótai, L.; Research Centre for Natural Sciences, Magyar Tudósok krt 2, Hungary; email: kotai.laszlo@ttk.hu 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 - Kováts, Éva AU - Németh, Gergely AU - Kamarás, Katalin AU - Béres, Kende Attila AU - Németh, Péter AU - Petruševski, V. AU - Nagyné Bereczki, Laura AU - Holló, B.B. AU - Sajó, István AU - Klébert, Szilvia AU - Farkas, Attila AU - Szilágyi, Imre Miklós AU - Kótai, László TI - Solid-Phase Quasi-Intramolecular Redox Reaction of [Ag(NH3)2]MnO4: An Easy Way to Prepare Pure AgMnO2 JF - INORGANIC CHEMISTRY J2 - INORG CHEM VL - 60 PY - 2021 IS - 6 SP - 3749 EP - 3760 PG - 12 SN - 0020-1669 DO - 10.1021/acs.inorgchem.0c03498 UR - https://m2.mtmt.hu/api/publication/32102019 ID - 32102019 N1 - Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Müegyetem rakpart 3, Budapest, H-1111, Hungary Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok krt 2, Budapest, H-1117, Hungary Wigner Research Centre for Physics (RCP), Institute for Solid State Physics and Optics, Konkoly Thege u. 29-33, Budapest, H-1121, Hungary Department of Earth and Environmental Sciences, University of Pannonia, Egyetem út 10, Veszprém, H-8200, Hungary Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, 1000, North Macedonia Chemical Crystallography Research Laboratory, Research Centre for Natural Sciences, University of Novi Sad, Novi Sad, 21000, Serbia Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, Novi Sad, 21000, Serbia János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs, H-7624, Hungary Department of Organic Chemistry, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Deuton-X Ltd., Selmeci u2. 89, érd, H-2030, Hungary Cited By :12 Export Date: 11 April 2023 CODEN: INOCA Correspondence Address: Kótai, L.; Institute of Materials and Environmental Chemistry, Magyar Tudósok krt 2, Hungary; email: kotai.laszlo@ttk.hu LA - English DB - MTMT ER -