TiO2光催化降解有机染料反应机理  

Reaction Mechanisms of Photocatalytic Degradation of Organic Dyes with TiO2

作　　者：殷榕灿[1] 崔玉民[1] 苗慧[1] 李慧泉[1] 张颖[1] 储陆峰 YIN Rongcan;CUI Yumin;MIAO Hui;LI Huiquan;ZHANG Ying;CHU Lufeng(Anhui Provincial Key Laboratory for Degradation and Monitoring of Pollution of the Environmen,Fuyang Normal College,236037;Fuyang Shunjie Technical Services Limited Company,Fuyang 236076,China)

机构地区：[1]阜阳师范学院,环境污染物降解与监测安徽省重点实验室,236037 [2]阜阳市顺杰油脂技术服务有限公司,安徽阜阳236076

出　　处：《水处理技术》2020年第3期11-15,共5页Technology of Water Treatment

基　　金：安徽省高校自然科学研究重点项目(KJ2018A0340);阜阳市政府-阜阳师范学院横向合作科研项目(XDHX201737,XDHX2016017,XDHXPT201702,XDHX2016002);安徽省教学研究重大项目(2017jyxm 0279);阜阳师范学院后续研究项目(2018HXXM08).

摘　　要：叙述了近年来国内外金属离子掺杂、贵金属沉积、半导体复合二氧化钛在光催化降解有机染料反应机理研究进展,以进一步揭示在TiO2修饰改性反应机理研究中所面临的主要问题及今后改进措施,认为已开发的新型TiO2光催化剂的光催化反应机理的研究,还处于初步设想及推测阶段,仍然需要实验进行验证。对于掺杂TiO2光催化剂,尽管研究发现了多种可见光响应的光催化剂,但是大多数光催化反应效率较低,必须探究其它不同修饰剂对TiO2的光吸收和光催化协同效应机理、光生电子与空穴在修饰条件下发生分离的机理,尤其是金属与非金属共同掺杂TiO2光催化降解有机染料反应机理将是一个重要研究方向。In recent years,the latest research progress of reaction mechanisms of metal ion doped TiO2,noble metal loading TiO2,semiconductor coupling TiO2 in the field of photocatalytic degradation of organic dyes at home and abroad was reviewed in this paper.The main problems and the future improvement measures in the study of reaction mechanism of TiO2 modified are presented.It is believed that the research on the photocatalytic reaction mechanism of the developed new type of TiO2 photocatalysts is still in the preliminary assumption and speculation s tage,which still needs to be verified by experiments.For the doped TiO2 photocatalyst,although a variety of visible light response photocatalysts have been found,most photocatalytic reactions have a low e fficiency.The mechanism of photoabsorption and photocatalysis synergistic effect of TiO2 modified by other modifiers and the mechanism of photo-electron and hole separation under modification conditions should be researched.In particular,the photocatalytic degradation of organic dyes by TiO2 doped with both metals and nonmetals will be an important research direction.

关 键 词：二氧化钛 反应机理 金属离子掺杂 贵金属沉积 半导体复合 有机染料 

分 类 号：O643.36[理学—物理化学]