TiO_2光催化反应及其在废水处理中的应用

TiO 2 Based Photocatalysis and Its Applications for Waste Water Treatment

ＴｉＯ２多相光催化能利用太阳能有效降解多种对环境有害的污染物，使有害物质矿化为ＣＯ２、Ｈ２Ｏ及其它无机小分子物质。本文综述了ＴｉＯ２光催化的机理，提高光催化能力的途径，多种具有代表性污染物的光催化降解处理方法，以及目前尚存在的一些问题，扼要介绍了近年来ＴｉＯ２光催化反应及其在废水处理中应用的研究进展及应用前景。

TiO 2 based heterogeneous photocatalysis has the potential to degrade environmental pollutants by solar energy. The contaminants can be mineralized to CO 2, H 2O and other small molecules. The paper deals with the principle and mechanism of photocatalysis on TiO 2, the ways for enhancing photocatalytic efficiency, and the methods and problems of TiO 2 photocatalysis for degradations of several typical contaminants. The recent developments in TiO 2 photocatalysis and its application prospects for the treatment of wastewater are introduced.