▎ 摘　　要

NOVELTY - Preparation of titanium dioxide-graphene composite sponge comprises mixing water, oxidized graphene and titanium dioxide to obtain the mixed solution, mixing the mixed solution and reducing agent to obtain the reaction liquid, soaking the sponge in the reaction liquid, and carrying out reduction reaction under sealing condition to obtain the titanium dioxide-graphene composite sponge. USE - Method for preparing titanium dioxide-graphene composite sponge used in treating water pollution (claimed). ADVANTAGE - The method can provide titanium dioxide-graphene composite sponge having high photocatalytic efficiency and good photocatalytic stability.