▎ 摘　　要

NOVELTY - The preparation method of nano-titanium dioxide/graphene composite material involves dissolving titanium dioxide slurry and graphene oxide in deionized water and then mixing, ultrasonically processing the mixture and then stirring, hydrothermally reacting the mixture at 80-180 degrees C for 4-12 hours and then cooling to room temperature, filtering the mixture, and drying. USE - The method is useful for preparation of nano-titanium dioxide/graphene composite material (claimed). ADVANTAGE - The method enables simple preparation of nano-titanium dioxide/graphene composite material with high efficiency and excellent photocatalytic performance and stability in environmentally-friendly manner. The nano-titanium dioxide/graphene composite material does not contain additive.