Photoluminescence Spectroscopic Studies on TiO2 Photocatalyst

Photoluminescence is a powerful technique in the study of semiconductor photocatalysts. This chapter deals with the application of photoluminescence techniques to the study of TiO2 in relation to its photocatalytic performance. The assignment of the visible and the near-infrared luminescence characteristics of TiO2 are discussed. The influence of the adsorbed molecules, such as H2O, O2, H2, unsaturated hydrocarbons and Pt loaded on TiO2, on the photoluminescence characteristics of TiO2 is also discussed. The relationship between the photoluminescence features of TiO2 and the photo-assisted reaction of water and methanol mixture is also summarized.