Synthesis of Nanocrystalline TiO2 by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium
Materials Science and Applied Chemistry IV: Selected peer-reviewed full text papers from the 61st Conference "Materials Science and Applied Chemistry (MSAC 2020)". Key Engineering Materials. Vol.903 2021
Regīna Burve, Vera Serga, Aija Krūmiņa

Due to its to its optical, thermal, photocatalytic and electrophysical properties, nanocrystalline titanium oxide (TiO2) is widely used in various fields. In the present work, a series of pure and Gd-modified (0.5, 5, 50 mol%) TiO2 nanocrystalline powders were prepared by a novel synthesis approach – extraction-pyrolytic method (EPM). Metal containing extracts on the basis of valeric acid were used as precursors. Thermal behavior of produced individual and mixed precursors were investigated by thermogravimetric analysis (TGA) and high temperature differential scanning colometry (HDSC). Phase composition of pure and Gd-modified TiO2 powders were studied as a function of pyrolysis temperature (450o -850°C ) and gadolinium content by X-ray diffraction (XRD) method. Photocatalytic activity of produced powders was studied by photocatalytic degradation of methylene blue (MB) under UV/VIS light irradiation.


Keywords
Anatase, Extraction-Pyrolytic Method, Gadolinium, Phase Transformation, Rutile
DOI
10.4028/www.scientific.net/KEM.903.149
Hyperlink
https://www.scientific.net/KEM.903.149

Burve, R., Serga, V., Krūmiņa, A. Synthesis of Nanocrystalline TiO2 by the Extraction-Pyrolytic Method and its Phase Transformation in the Presence of Gadolinium. Key Engineering Materials, 2021, Vol.903, 149.-154.lpp. ISSN 1013-9826. e-ISSN 1662-9795. Pieejams: doi:10.4028/www.scientific.net/KEM.903.149

Publication language
English (en)
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