化工进展

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可见光响应超亲水TiO2薄膜研究进展

黄 涛,黄 洪,司徒粤   

  1. 华南理工大学化学与化工学院,广东 广州 510640
  • 出版日期:2012-07-05 发布日期:2012-07-25

Research progress of visible-light-driven superhydrophilic TiO2 thin films

HUANG Tao,HUANG Hong,SITU Yue   

  1. School of Chemistry and Chemical Engineering,South China University of Technology, Guangzhou 510640,Guangdong,China
  • Online:2012-07-05 Published:2012-07-25

摘要: 介绍了TiO2薄膜的超亲水机理,论述了实现TiO2薄膜可见光响应超亲水性的改性技术,主要包括构建粗糙结构薄膜、贵金属沉积、离子掺杂、表面光敏化、半导体复合、TiO2/SiO2复合、多种改性方法联合使用等方法。总结了目前超亲水TiO2薄膜主要存在制备工艺复杂、改性条件苛刻、亲水寿命短等问题,并指出采用溶胶-凝胶法,利用多种改性方法的联合使用是解决这些问题的重要研究方向。

关键词: 可见光响应, 超亲水性, TiO2薄膜, 改性

Abstract: The mechanisms of TiO2 films superhydrophlicity are introduced. The methods for realizing visible-light-driven superhydrophilicity of TiO2 thin film,including constructing rough films,precious metal deposition,ion doping,surface sensitization,semiconductor coupling ,TiO2/SiO2 compositing and multiple modifications are discussed. In addition,the existing problems of superhydrophilic TiO2 are addressed,such as complicated preparation technology,rigid modification conditions and short time of superhydrophilicity. Using the sol-gel method and combining multiple modifications are effective methods to resolve these problems in the future.

Key words: visible-light- driven, superhydrophilicity, TiO2 thin films, modification methods