▎ 摘　　要

NOVELTY - Method for preparing graphene/copper sulfide zinc flower-like microsphere superstructure visible light catalyst involves (a) adding graphene oxide to deionized water, adding soluble zinc salt and soluble copper to it and ultrasonically dispersing to obtain a mixed solution (A), (b) adding thiourea to the mixed solution (A), stirring and dissolving to obtain a mixed solution (B), (c) adding capping agent polyethylene glycol 600 to mixed solution (B) per milliliter deionized water, stirring uniformly to obtain a mixed solution (C), and (d) transferring the mixed solution (C) to a hydrothermal reaction kettle and hydrothermally heating, cooling to room temperature naturally, centrifuging to obtain a black precipitate, and using ionized water and anhydrous ethanol alternately for ultrasonically washing the black precipitate separately and drying to obtain the product. USE - The method is useful for preparing graphene/copper sulfide zinc flower-like microsphere superstructure visible light catalyst. ADVANTAGE - The catalyst has excellent composite effect, strong anti-light corrosion ability and large specific surface area, easily separates photo-generated electron-hole pair, high visible light photocatalytic activity, and is prepared by simple production technique, easy control of reaction parameters, environment-friendly and cost-effective. DETAILED DESCRIPTION - Method for preparing graphene/copper sulfide zinc flower-like microsphere superstructure visible light catalyst of formula: RGO/ZnxCu1-xS involves (a) adding graphene oxide to deionized water, adding soluble zinc salt and soluble copper to it according to the ratio of the amount of zinc to copper in copper zinc sulfide of formula ZnxCu1-xS, which is x:(1-x), in which the total amount of salt, soluble zinc salt and soluble copper salt is 0.032-0.064 mmol of zinc ions and copper ions added per mg of graphene oxide, adding 1-2 mg graphene oxide per ml deionized water, and ultrasonically dispersing for 1-3 hours to obtain a mixed solution (A), (b) adding 2-4 times of thiourea to the mixed solution (A) with respect to the total amount of zinc ions and copper ions, stirring and dissolving to obtain a mixed solution (B), (c) adding 20-30 mg capping agent polyethylene glycol 600 to mixed solution (B) per milliliter deionized water, stirring uniformly to obtain a mixed solution (C), and (d) transferring the mixed solution (C) to a hydrothermal reaction kettle and hydrothermally heating at 140-180 degrees C for 8-12 hours, after the reaction is completed, cooling to room temperature naturally, centrifuging to obtain a black precipitate, and using ionized water and anhydrous ethanol alternately for ultrasonically washing the black precipitate separately and drying to obtain the product. x = 0.1-0.35.