Studies on the Microstructure of Pure and Doped Anatase TiO2 Nanoparticles by SAXS

摘要：

　　Pure TiO2,Ce-doped and Ce/Si-codoped TiO2 nanoparticles with different Ce contents were synthesized by using a sol-gel-hydrothermal method.The as-synthesized samples were annealed at 400 ℃.Their crystallization was investigated by Raman spectroscope.The result showed that Ce-doping and Ce-Si codoping decreased the crystallization.The interfacial and fractal properties were investigated by synchrotron radiation small angle X-ray scattering (SAXS).The results indicated that Ce-doping induced the Porod negative deviation,and the fractal properties showed TiO2 nanoparticles codoped by Ce-Si were rougher than these of the pure TiO2 and Ce-doped TiO2.This rough surface of the nanoparticles was helpful to improve the photocatalytic activity.

关键词： Small Angle X-ray Scattering Raman Spectra TiO2 nanoparticles

作者: Weimei Shi Xiaojun Dai Guangcheng Yang Yao Xu Yi Liu

作者单位: Sichuan Advanced Materials Center, Institute of Chemical Materials, China Academy of Engineering Phy Sichuan Advanced Materials Center, Institute of Chemical Materials, China Academy of Engineering Phy State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, T SSRF, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800,China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 831-836

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）