Characterization and Properties of Titanium(IV) Oxide, Synthesized by Different Routes
Affiliation:
1 Department of Technology of Inorganic Substances,
Water Purification and General Chemical Technology,
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”,
37, Prosp. Peremohy, 03056 Kyiv, Ukraine
2 Department of Environmental Health Engineering,
Faculty of Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
3 Department of Engineering, Kashmar Branch,
Islamic Azad University, PO Box 161, Kashmar, Iran
dontsova@xtf.kpi.ua
DOI:
https://doi.org/10.23939/chcht15.04.465
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Keywords:
Abstract:
The article considers the influence of precursor type and sol-gel synthesis conditions of TiO2 on its properties. The obtained TiO2 samples were characterized by X-ray diffraction methods, electron microscopy, as a result of which it was found that all the obtained TiO2 powders have the crystallite size in a nanorange of 2.5–17 nm. It was shown that sorption-photocatalytic properties of TiO2 significantly depend on a phase composition, surface acidity, specific surface area and porosity. It was found that the amorphous TiO2 has improved adsorption properties, while crystalline TiO2 is characterized by enhanced photocatalytic properties. Determined acidic nature of the TiO2 surface explains the better sorption and photocatalysis relative to the cationic dye.
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