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TiO2光催化剂的光谱研究
引用本文:苏文悦,傅贤智,魏可镁,张汉辉,林华香,王心晨,李旦振.TiO2光催化剂的光谱研究[J].光谱学与光谱分析,2001,21(1):32-34.
作者姓名:苏文悦  傅贤智  魏可镁  张汉辉  林华香  王心晨  李旦振
作者单位:1. 福州大学光催化研究所,
2. 福州大学化学系,
基金项目:国家自然科学基金(批准号:29843003)、国家产业化前期关键技术开发项目 (批准号:98-03)、福建省自然科学基金(批准号:B9820001)和教育部留学回国人员科研启动基金(批准号:1999-363)等资助。
摘    要:采用sol-gel法制备了纳米TiO2光催化剂,运用FTIR,FT-Ranam,DSR等光谱技术对催化剂进行了表征,以光催化解油酸作为模型反应考察光催化活性。实验结果表明,催化剂的烧结温度对催化剂的晶相结构、半导体能带结构、光吸收性能及光催化活性均产生显著的影响,当烧结温度为400℃时,TiO2光催化剂具有最好的表观吸光度,最大的吸收带边,以及最佳的光催化活性。

关 键 词:二氧化钛  FTIR  FT-RAMAN  DRS  纳米光催化剂  制备  催化活性  光谱  表征
修稿时间:1999年11月19

Spectrum Studies on Titania Photocatalysts
Wenyue SU.Spectrum Studies on Titania Photocatalysts[J].Spectroscopy and Spectral Analysis,2001,21(1):32-34.
Authors:Wenyue SU
Institution:Research Institute of Photocatalysis, Fuzhou University, 350002 Fuzhou.
Abstract:The nano-sized TiO2 photocatalysts were prepared by sol-gel method and characterized by FTIR spectroscopy, FT-Raman spectroscopy and diffuse reflectance spectroscopy(DRS). Photocatalytic degradation of oleic acid over the TiO2 catalysts was investigated. The result showed that calcination temperature has strong effect on crystal structure, energy band structure, optical adsorption and photocatalytic activity of the TiO2 catalysts. It was found that the TiO2 photocatalyst calcined at 400 degrees C has the best apparent optical adsorption, the biggest band edge position and the highest photoactivity. The effect of calcination temperature on photocatalytic activity of TiO2 catalysts has been ascribed to the changes in structure and optical property of catalyst such as crystal size, content of rutile, residual NO3-, and band-edge position of light adsorption.
Keywords:Titania    FTIR    FT-Raman    DRS
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