▎ 摘　　要

Titania/graphene (TiO2-GE) composite photocatalyst has been in-situ synthesized by sot-gel method. The photocatalytic performance of pure TiO2 and TiO2-GE composite obtained by different methods has been investigated using the photodegradation of methylthionine chloride and rhodamine B as model reactions. The results show that the photocatalytic activity of TiO2-GE composite is much higher than that of pure TiO2 due to rapid electronic transmission and the good adsorption of GE. Additionally, the as-prepared TiO2-GE composites obtained with different preparation methods have different activities in the photodegradation of methylthionine chloride and rhodamine B. The TiO2-GE composite synthesized by in -situ sol-gel method shows the highest photocatalytic activity.