▎ 摘　　要

NOVELTY - Method for preparing graphene/titanium oxide composite visible photocatalyst involves (a) dispersing graphene oxide in an aqueous alcohol solution and carrying out ultrasonic treatment on the mixed dispersion solution for a period of time, (b) slowly dripping titanium tetrachloride solution in the solution obtained in step (a) while stirring, (c) continuously stirring the solution for a period of time, and (d) transferring the solution to a hydrothermal reaction kettle, carrying out hydrothermal reaction, cooling, filtering, washing and drying to obtain the photocatalyst. USE - Method is useful for preparing graphene/titanium oxide composite visible photocatalyst, which is useful for catalytically degrading pollutants in air or water under visible light condition (all claimed). ADVANTAGE - The method enables the simple, easy, economical and environmentally-friendly preparation of the photocatalyst with improved solar energy utilization rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the graphene/titanium oxide composite visible photocatalyst prepared by the above method.