▎ 摘　　要

NOVELTY - Preparation of copper (Cu)-doped zinc oxide (ZnO)/graphene composite photocatalyst comprises mixing graphite oxide and surfactant hexadecyltrimethylammonium bromide in distilled water to obtain precursor reactant I; mixing zinc acetate and copper acetate in distilled water to obtain precursor reactant II; mixing hexamethylene tetramine and sodium citrate in distilled water to obtain precursor reactant III; mixing precursor reactant I and precursor reactant II, adding precursor reactant III, reacting; cooling, sealing and standing, filtering; and drying filter residue and cooling. USE - Method for preparing copper-doped zinc oxide/graphene composite photocatalyst (claimed). ADVANTAGE - The method improves photo-catalytic efficiency of product. DETAILED DESCRIPTION - Preparation of copper (Cu)-doped zinc oxide (ZnO)/graphene composite photocatalyst comprises: (A) mixing graphite oxide and surfactant hexadecyltrimethylammonium bromide at 1:1-1:3 mass ratio in distilled water, performing ultrasonic treatment for 30-90 minutes to obtain precursor reactant I; (B) mixing zinc acetate and copper acetate at 99:1-90:10 mol ratio in distilled water, performing ultrasonic treatment for 10-40 minutes to obtain precursor reactant II; mixing hexamethylene tetramine and sodium citrate at 5:1-20:1 mol ratio in distilled water, performing ultrasonic treatment for 10-40 minutes to obtain precursor reactant III; (C) mixing precursor reactant I and precursor reactant II at 1:4-6 volume ratio, processing for 10-40 minutes, adding precursor reactant III at 1:0.9-1.2 volume ratio, reacting at 70-120 degrees C for 2-6 hours; (D) naturally cooling, sealing and standing, filtering to obtain filter residue; and (E) drying filter residue at 200-600 degrees C for 100 minutes, keeping temperature for 60 minutes, and naturally cooling to room temperature.