Photoluminescence Spectroscopic Studies on TiO2 Photocatalyst

Abstract

Photoluminescence is a powerful technique in the study of semiconductor photocatalysts. This chapter deals with the application of photoluminescence techniques to the study of TiO 2 in relation to its photocatalytic performance. The assignment of the visible and the near-infrared luminescence characteristics of TiO 2 are discussed. The influence of the adsorbed molecules, such as H 2 O, O 2 , H 2 , unsaturated hydrocarbons and Pt loaded on TiO 2 , on the photoluminescence characteristics of TiO 2 is also discussed. The relationship between the photoluminescence features of TiO 2 and the photo-assisted reaction of water and methanol mixture is also summarized.

Effect of annealing on UV‐visible absorption and photoluminescence behavior of liquid phase deposited TiO2 nanorods

“…However, the fabrication of TiO 2 nanorods as well as their corresponding assembly into functional arrays is expected to improve the luminescence efficiency of electro‐optic devices. PL spectroscopy is a noncontact, nondestructive, and effective way that allows getting information about surface oxygen vacancies and defects, recombination of photoinduced charge carriers, the efficiency of charge carriers' trapping as well as immigration and transfer to understand the behavior of electron‐hole pairs in TiO 2 …”