Study on Photocatalytic Properties of Graphene/TiO2 Composite Prepared by Impregnation Method

Impregnation method was used to prepare of graphene/TiO2composite. Its microstructure, phase and diffuse reflection properties were characterized by using of SEM, XRD and DRS. And the photocatalytic properties of graphene/TiO2composite changed with the reaction time, composite quantity added, X3B initial concentration and pH were investigated. The results show that the degradation degree of graphene/TiO2composite on X3B increases with reaction time increasing. Graphene/TiO2composite of GR3 has the best photocatalytic performance when the introduction of graphene was 0.4mg/g(TiO2). Degradation efficiency of GR3 on X3B increases with the quantity of GR3 added to the solution increasing. And the photocatalytic efficiency is the highest when GR3 is 0.15g. With increasing of X3B initial concentration, the solution degradation rate is decreased. And it is beneficial for graphene/TiO2composite to play its photocatalytic properties in the weak alkaline conditions.