TiO 2 Based Photocatalysis and Its Applications for Waste Water Treatment
Shen Weiren\ Zhao Wenkuan\ He Fei\ Fang Youling (Department of Chemistry, Wuhan University, Wuhan 430072, China)
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.