▎ 摘　　要

NOVELTY - A reverse osmosis composite film comprises graphene oxide quantum dots in-situ reduced silver nanoparticles, where the graphene oxide quantum dots in-situ reduced silver nanoparticles comprise base film and a polyamide film layer on the base film, the polyamide film layer is uniformly mixed with an antibacterial agent and the antibacterial agent is composite material in which the silver nanoparticles are uniformly reduced in situ on the graphene oxide quantum dots. USE - Reverse osmosis composite film. ADVANTAGE - The reverse osmosis composite film has enhanced specific surface area and sterilizing efficiency and better stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a reverse osmosis composite film, which involves mixing graphene oxide quantum dot solution is mixed with the silver nitrate solution, after ultrasonication, adding an alkaline solution and the mixture is continuously stirring in a water bath to obtain an in-situ reduced silver nanoparticle composite material on the graphene oxide quantum dots, dispersing the in-situ reduced silver nanoparticle composite material on the graphene oxide quantum dots in water and adding a polyamine to form an aqueous phase solution and dissolving a polybasic acid chloride in an organic solvent to prepare an oil phase solution, pouring the aqueous solution onto the base film after contact, removing the excess aqueous phase solution, drying naturally, pouring into the oil phase solution, removing the excess oil phase solution after the interfacial polymerization and drying to obtain the finished product.