▎ 摘　　要

NOVELTY - Preparing graphene/nanometer copper oxide composite antibacterial agent comprises mixing graphene oxide, basic copper carbonate, copper citrate, urea, aqueous ammonia and solvent to obtain a mixed solution, and subjecting the mixed solution to two hydrothermal reactions, where the temperature of the first hydrothermal reaction is 130-150°C for 2-4 hours, and the temperature of the second hydrothermal reaction is 210-230°C for 5-7 hours. USE - The method is useful for preparing graphene/nanometer copper oxide composite antibacterial agent, which is useful in aerospace, automotive industry, electronic appliance, medical appliance, infant toy and packaging material. ADVANTAGE - The combination of graphene and nanometer copper oxide is very firm, it is not easy to fall off, adding it to the substrate is not easy to agglomerate, and can play better antibacterial effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: graphene/nanometer copper oxide composite antibacterial agent prepared by the above preparation method; antibacterial polycarbonate, comprising graphene/nanometer copper oxide composite antibacterial agent; and preparing the antibacterial polycarbonate, comprising mixing water, ethanol, dispersant, coupling agent, thickener, binder and antibacterial agent, where the antibacterial agent is graphene/nanometer copper oxide composite antibacterial agent, adding polycarbonate to the mixture, and mixing again.