J
János Madarász
Researcher at Budapest University of Technology and Economics
Publications - 136
Citations - 2884
János Madarász is an academic researcher from Budapest University of Technology and Economics. The author has contributed to research in topics: Evolved gas analysis & Thermal decomposition. The author has an hindex of 27, co-authored 127 publications receiving 2573 citations. Previous affiliations of János Madarász include Shizuoka University & Palacký University, Olomouc.
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Journal ArticleDOI
Stability and Controlled Composition of Hexagonal WO3
Imre Miklós Szilágyi,János Madarász,György Pokol,Péter Király,Gábor Tárkányi,S. Saukko,János Mizsei,Attila Tóth,András Szabó,Katalin Varga-Josepovits +9 more
TL;DR: In this article, the formation of nanosized hexagonal tungsten oxide (h-WO3) during the annealing of hexagonal ammonium Tungsten bronze (HATB), (NH4)0.33−xWO 3−y was investigated by TG/DTA-MS, XRD, SEM, Raman, XPS, and 1H-MAS NMR analyses.
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Thermal decomposition of thiourea complexes of Cu(I), Zn(II), and Sn(II) chlorides as precursors for the spray pyrolysis deposition of sulfide thin films
TL;DR: In this article, thermal decomposition of four thiourea-metal complexes, solid precursors for spray pyrolysis deposition (SPD) methods, had been carried out by using thermoanalytical and X-ray diffraction (XRD) methods in combination.
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Synthesis, vibrational spectra and X-ray structures of copper(I) thiourea complexes
TL;DR: In this article, the structures of six copper-thiourea complexes were determined at room and also at low temperature, and the stochastic ratio of the resulting thin film was shown to be 1:3.
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Gas sensing selectivity of hexagonal and monoclinic WO3 to H2S
TL;DR: In this paper, the effect of crystal structure on the gas sensitivity of tungsten oxides was studied, and both hexagonal and monoclinic WO 3 samples were tested as gas sensors to CH 4, CO, H 2, NO and H 2 S (1000 and 10ppm) at 200 and 600°C, respectively.
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Comparative evolved gas analyses on thermal degradation of thiourea by coupled TG-FTIR and TG/DTA-MS instruments
János Madarász,György Pokol +1 more
TL;DR: In this article, the identification and monitoring of gaseous species released during thermal decomposition of pure thiourea, (NH2)2C=S in argon, helium and air atmosphere have been carried out by both online coupled TG-FTIR and simultaneous TG/DTA-MS apparatuses manufactured by TA Instruments(USA).