无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (3): 23-27.doi: 10.11962/1006-4990.2019-0245

• 综述与专论 • 上一篇    下一篇

二氧化钛光催化剂改性研究进展

朱佳新,熊裕华,郭锐()   

  1. 南昌大学材料科学与工程学院,江西南昌 330031
  • 收稿日期:2019-09-21 出版日期:2020-03-10 发布日期:2020-03-31
  • 作者简介:朱佳新(1997— ),女,在读本科生,主要研究功能材料;E-mail:3535815534@qq.com。
  • 基金资助:
    国家自然科学基金项目(11564025)

Research progress in modification of TiO2 photocatalyst

Zhu Jiaxin,Xiong Yuhua,Guo Rui()   

  1. College of Material Science and Engineering,Nanchang University,Nanchang 330031,China
  • Received:2019-09-21 Published:2020-03-10 Online:2020-03-31

摘要:

光催化技术在处理有机污染物领域是一种资源节约、环境友好、极具应用前景的新型绿色环保技术。二氧化钛作为一种典型的半导体光催化剂,因具有光活性好、稳定性好、对人体无毒害、成本低廉、反应条件温和且无二次污染等特点而深受人们的青睐。然而它的宽带隙和较高的光生电子-空穴对复合率限制了它的大规模应用,这都是需要解决的技术难题。讲解了二氧化钛的催化机理,分析了传统二氧化钛的局限性,针对这些缺点介绍了提高二氧化钛催化活性的改性方法及原理,如离子掺杂、表面沉积贵金属、表面光敏化、半导体复合、负载等方法。讨论了二氧化钛光催化剂未来的研究和发展方向。

关键词: 光催化剂, 二氧化钛改性, 降解, 有机污染物

Abstract:

Photocatalysis technology is a new green environmental protection technology with resource saving,environmental friendliness and great application prospect in the field of organic pollutant treatment.As a typical semiconductor photocatalyst,TiO2 is favored by people for its good photoactivity,good stability,non-toxic to human health,low cost,mild reaction conditions and no secondary pollution etc..However,its wide band gap and higher recombination rate of photogenerated electronhole pair limit its large-scale application,which are technical problems to be solved.The catalytic mechanism of TiO2 was explained.The limitations of traditional TiO2 were analyzed.And the modification methods and principles for improving the catalytic activity of TiO2,such as ion doping,surface deposition of precious metals,surface photosensitization,semiconductor composite,load and other methods,were introduced.At last the future research and development direction of TiO2 photocatalyst were discussed.

Key words: photocatalyst, TiO2 modification, degradation, organic pollutant

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