纳米TiO_2光催化降解技术在污水处理中的应用  

The Application of Nanosized TiO_2 Photocatalyst in Wastewater Treatment

作　　者：张丙华[1] 李俊玲[1] 

机构地区：[1]中国石油大学(华东)化学化工学院,山东东营257061

出　　处：《四川环境》2006年第5期56-60,共5页Sichuan Environment

摘　　要：光催化技术是一种新兴的高效节能现代污水处理技术,目前大部分还处于实验研究阶段。本文介绍了TiO2光催化降解水中有机物的机理以及pH值、载体、外加氧化剂等对其光催化活性的影响,TiO2光催化剂的表面修饰及与其它技术的联用情况。讨论了光电催化、太阳能利用等对光催化领域的推动作用,并指出在该领域的研究中存在问题和发展方向。Nanosized TiO2 photocatalyst is a kind of new developing technology of wastewater treatment.h is still in the stage of experiment at present. This paper introduces the degraded mechanism of organics in wastewater and discusses the effect factors such as pH value, surface modification of TiO2, carriers, exterior oxidants and the application together with other technology.Meanwhile the driving force of photoelectric catalyzing and solar energy utilizing on photocatalysis are discussed, and its development trend and existing problems are also pointed out.

关 键 词：光催化剂 纳米二氧化钛 影响因素 污水处理 

分 类 号：X703[环境科学与工程—环境工程]