TiO_2光催化剂改性研究进展  

Review on the Modification of TiO_2 Photocatalyst

作　　者：张凤君[1] 刘卓婧[1] 刘兆煐[1] 贾春玉[1] 赵旭[1] 吕聪[1] 

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,长春130021

出　　处：《科技导报》2013年第17期66-71,共6页Science & Technology Review

基　　金：国家科技支撑计划项目(2012BAJ25B10)

摘　　要：TiO2光催化剂具有禁带宽度较大、光生电子-空穴易复合等缺点,因而国内外关于TiO2光催化剂的改性研究很多。本文综述了贵金属沉积、元素掺杂(金属离子掺杂、非金属掺杂、共掺杂)、复合半导体、表面光敏化、表面酸化等TiO2光催化剂改性方法及原理。其中,非金属掺杂和共掺杂改性可使TiO2光响应波长红移,同时保留TiO2对紫外光的响应,从而实现良好的处理效果叠加。最后展望了TiO2光催化剂改性研究的未来研究方向,即兼顾生产成本,保持TiO2在复杂环境下的稳定性,并提高其回收利用率。TiO2 photocatalyst has some disadvantages, such as wider band gap, high electron-hole recombination rate, etc. Therefore, a lot of research work focused on the modification of TiO2 photocatalyst has been carried out at home and aboard. Some modification methods of TiO2 photocatalyst, e.g. noble metal deposition, element doping （metal ion doping, non -metal doping, and co -doping）, compound semiconductor, photosensitization, and surface acidification, as well as their mechanisms are summarized. Among them, the response wavelength of TiO2 shows a red-shift after non-metal doping or co-doping, at the meanwhile, UV response of TiO2 is preserved, therefore, the superimposition of good process effect is realized. The future direction of photocatalytic study is looked into, giving consideration to the production cast, keeping the stability of TiO2 in complex environment, and increasing recovery rate of TiO2 .

关 键 词：光催化 TIO2 改性 

分 类 号：O643.36[理学—物理化学]