▎ 摘　　要

NOVELTY - A titanium dioxide-based graphene composite material comprises 20-40 pts. wt. graphite and 40-60 pts. wt. titanium dioxide. USE - Titanium dioxide-based graphene composite material. ADVANTAGE - The composite material effectively improves the visible light catalytic activity of the catalyst, and the preparation process is simple and the preparation cycle is short. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of titanium dioxide-based graphene composite material, involves (1) using 20-40 pts. wt. natural graphite powder as raw material, using modified Hummers method to prepare graphite oxide, and then pass ultrasonic stripping to produce graphene oxide and (2) adding 40-60 pts. wt. titanium dioxide to the prepared graphene oxide suspension, stirring for 2 hours to obtain a uniformly dispersed suspension, transferring mixed solution to a polytetrafluoroethylene-lined stainless steel high-pressure reaction vessel at 120 degrees C, carrying out the reaction for 12 hours, washing with water by centrifugation and vacuum drying at 60 degrees C for 12 hours.