PHASE STRUCTURE OF W-DOPED NANO-TiO2 PRODUCED BY SOL-GEL METHOD  

作　　者：Yucheng Wu Xiaoye Hu Ting Xie Guanghai Li Lide Zhang 

机构地区：[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

出　　处：《China Particuology》2005年第4期233-236,共4页

基　　金：The authors sincerely acknowledge the financial support from Anhui Scientific Project(Grant No.01402007);Creative Program of Hefei University of Technology(Nanostructure and Functional Nanomaterials,Grant No.103-037016).

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.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.

关 键 词：NANO-TIO2 W SOL-GEL DOPE 

分 类 号：TB383[一般工业技术—材料科学与工程]