▎ 摘　　要

NOVELTY - Preparing graphene-based copper/copper(I) oxide/titanium dioxide composite visible light catalyst, comprises dispersing graphene oxide in water to obtain graphene oxide solution, dissolving copper acetate and tetrabutyl titanate in organic solvent, and mixing to obtain a mixed solution, then dropping the mixed solution into the graphene oxide solution, and mixing to obtain a reaction solution, controlling the reaction solution at a oil bath temperature of 120-160 degrees C, adding alkali reagent, then reacting for 1-5 hours under stirring condition, and separating to obtain a precipitate, adding ethylene glycol into the precipitate, heating and refluxing for 1-2 hours, and separating to obtain a precursor, heating the precursor under an inert gas atmosphere to 600-800 degrees C, then quickly placing in a coolant at -10 degrees C to -50 degrees C, and high temperature quenching. USE - The method is useful for preparing graphene-based copper/copper(I) oxide/titanium dioxide composite visible light catalyst. ADVANTAGE - The photocatalyst: has improved stability and specific surface area; and provide more active sites for photocatalytic reactions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-based copper/copper(I) oxide/titanium dioxide composite visible light catalyst is obtained by above mention method.