Phase structure of W-doped nano-TiO2 produced by sol-gel method--颗粒学报PARTICUOLOGY

Wu, Y., Hu, X., Xie, T., Li, G., & Zhang, L. (2005). Phase structure of W-doped nano-TiO2 produced by sol-gel method. China Particuology, 3(4), 233-236. https://doi.org/10.1016/S1672-2515(07)60193-6

Phase structure of W-doped nano-TiO₂ produced by sol-gel method

Yucheng Wu ^{a b *}, Xiaoye Hu ^a, Ting Xie^a, Guanghai Li ^b, Lide Zhang ^b

a Faculty of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, P. R. China
b Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China

10.1016/S1672-2515(07)60193-6

Volume 3, Issue 4, August 2005, Pages 233-236

Received 27 December 2004, Accepted 25 March 2005, Available online 14 December 2007.

E-mail: ycwu@issp.ac.cn

Highlights

Abstract

With Ti(OBu)₄ as precursor, and HAc as complexing agent, pure and W-doped TiO₂ gelatins were prepared by a sol-gel method. During the process of gel formation, metal ions were dispersed in the porous TiO₂ matrix. Then, powders of nano-TiO₂ and W-doped nano-TiO₂ were prepared by drying, grinding and heat treatment at different temperatures. The grain size and structure of the samples, pure TiO₂ and W-doped, and treated at different temperatures, were studied by X-ray diffraction (XRD), Beckman Coulter Sorption Analysis and TEM. Results showed that, with increasing temperature, the TiO₂ transformed from anatase to rutile and the grain size increased. This transformation and grain growth of TiO₂ could be retarded by doping with W.

Graphical abstract

Keywords

nano-TiO₂; W; sol-gel; dope

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