二氧化钛光催化剂改性研究进展
收稿日期: 2019-09-21
网络出版日期: 2020-03-31
基金资助
国家自然科学基金项目(11564025)
Research progress in modification of TiO2 photocatalyst
Received date: 2019-09-21
Online published: 2020-03-31
朱佳新 , 熊裕华 , 郭锐 . 二氧化钛光催化剂改性研究进展[J]. 无机盐工业, 2020 , 52(3) : 23 -27 . DOI: 10.11962/1006-4990.2019-0245
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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