| PHASE STRUCTURE OF W-DOPED NANO-TiO2 PRODUCED BY SOL-GEL METHOD |
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| 引用本文： | Yucheng Wu Xiaoye Hu Ting Xie Guanghai Li Lide Zhang. PHASE STRUCTURE OF W-DOPED NANO-TiO2 PRODUCED BY SOL-GEL METHOD[J]. 中国颗粒学报, 2005, 3(4): 233-236 |
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| 作者姓名： | Yucheng Wu Xiaoye Hu Ting Xie Guanghai Li Lide Zhang |
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| 作者单位： | [1]Faculty of Materials Science and Engineering, Hefei University of Technol , Hefei 230009, P. R. China [2]Institute of Solid State Physics,Chinese Academy of Sciences,Hefei 230031, P. R. China |
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| 基金项目： | The authors sincerely acknowledge the financial support from Anhui Scientific Project （Grant No. 01402007）, and Creative Program of Hefei University of Technology （Nanostructure and Functional Nanomaterials, Grant No. 103-037016）. |
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| 摘 要： | 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.
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| 关 键 词： | 相位结构 二氧化钛 纳米结构 凝胶体 掺杂 |
| 收稿时间： | 2004-12-27 |
| 修稿时间： | 2004-12-272005-03-25 |
PHASE STRUCTURE OF W-DOPED NANO-TiO2 PRODUCED BY SOL-GEL METHOD |
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| Yucheng;Wu;Xiaoye;Hu;Ting;Xie;Guanghai;Li;Lide;Zhang. PHASE STRUCTURE OF W-DOPED NANO-TiO2 PRODUCED BY SOL-GEL METHOD[J]. China Particuology, 2005, 3(4): 233-236 |
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| Authors: | Yucheng Wu Xiaoye Hu Ting Xie Guanghai Li Lide Zhang |
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| 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. |
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| Keywords: | nano-TiO2 W sol-gel dope |
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