Abstract
Titania (TiO2) nanorod powder was prepared by nonhydrolytic sol-gel method using titanic chloride (TiCl4) as titanium source, methylene dichloride (CH2Cl2) as solvent, absolute ethyl alcohol (CH3CH2OH) as oxygen donor. The effects of Si4+ doping on the TiO2 nanocrystalline phase transformation temperature were systematically researched. The results showed that when the molar ratio of Ti4+ to Si4+ is 1 to1.3, TiO2 prepared by calcination at 1100 °C for 1 hour exhibits rod shape and has good photocatalytic activity. Doping of Si4+ makes glass phase core-shell structure forming on the surface of anatase crystal particles, which can inhibit crystal phase transformation and raise the transformation temperature, making TiO2 stable in anatase phase at 1200 °C.
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Funded by the National Natural Science Foundation of China (No.51302064)
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Yang, J., Qiao, N., Wei, H. et al. Preparation and Performance of Si4+-doping Rod-shaped TiO2 Powder by Nonhydrolytic Sol-gel Method. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 33, 575–578 (2018). https://doi.org/10.1007/s11595-018-1863-3
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DOI: https://doi.org/10.1007/s11595-018-1863-3