▎ 摘　　要

NOVELTY - Zinc sulfide/graphene oxide (rGO)/copper sulfide (CuS) nano photocatalyst, is claimed. The preparation of nano photocatalyst comprises (i) adding zinc salt, 2-methylimidazole and graphene oxide in a methanol solution, ultrasonically dispersing to GO-ZIF-8 solution, stirring to form a uniform GO-ZIF-8 solution, centrifuging to obtain GO-ZIF-8 nanoparticles, adding sulfur source, placing in a solvent for ultrasonic dispersion to prepare a mixed solution of GO-ZIF-8 and a sulfur source, stirring to form a uniform mixed solution, carrying out vulcanization reaction; naturally cooling, centrifuging, and drying to obtain ZnS/rGO nanoparticles; (ii) adding ZnS/rGO nanoparticles and copper salts into ethanol and deionized aqueous solution for ultrasonic dispersion to prepare ZnS/rGO and copper salt mixed solution, stirring to form a mixed solution of ZnS/rGO and copper salt, and carrying out cation replacement reaction, cooling, centrifuging, and drying. USE - Used as zinc sulfide/graphene oxide/copper sulfide nano photocatalyst. ADVANTAGE - The catalyst has an ultra-large specific surface area, and increases the number of active sites exposed. DETAILED DESCRIPTION - Zinc sulfide/graphene oxide (rGO)/copper sulfide (CuS) nano photocatalyst, is claimed. The preparation of nano photocatalyst comprises (i) adding zinc salt, 2-methylimidazole and graphene oxide in a methanol solution, ultrasonically dispersing to prepare 0.01-1 mol/l GO-ZIF-8 solution, stirring the mixture at a constant temperature to form a uniform GO-ZIF-8 solution, centrifuging the solution to obtain GO-ZIF-8 nanoparticles, adding sulfur source into the GO-ZIF-8 nanoparticles, placing in a solvent for ultrasonic dispersion to prepare a mixed solution of 0.01-1 mol/l of GO-ZIF-8 and a sulfur source, stirring at a constant temperature to form a uniform mixed solution, adding the solution into a hydrothermal reaction kettle, carrying out vulcanization reaction at the specified temperature and time; naturally cooling, centrifuging, and drying to obtain ZnS/rGO nanoparticles; (ii) adding ZnS/rGO nanoparticles and copper salts into ethanol and deionized aqueous solution for ultrasonic dispersion to prepare 0.01-1 mol/l ZnS/rGO and copper salt mixed solution, stirring at a constant temperature to form a mixed solution of ZnS/rGO and copper salt, passing the solution into a hydrothermal reaction vessel, and carrying out cation replacement reaction occurs at a specified temperature and time, naturally cooling, centrifuging, and drying.