Research of S-doped modified TiO_2 photocatalyst

TiO 2 photocatalyst was considered the most application prospect because of its nontoxicity,chemical stability, inexpensiveness and non-secondary pollution at present,but the wide band gap width and low quantum conversion efficiency limit its practical application. It was the research hot spot that modifying TiO 2 in order to improve its photocatalytic activity and absorbability invisible light irradiation. This review deals with the working mechanism and the influences to the photocatalytic activity of TiO 2 modification by doping S single and co-doping with other ions. Moreover,the main progress at home and abroad and the existing problems are all summarized.