▎ 摘　　要

NOVELTY - A metal/graphene nanocomposite comprises graphene and metal nanoparticles. USE - Metal/graphene nanocomposite (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of metal/graphene nanocomposite, which involves mixing 5-10 ml organic light-negative hydrogen donor reducing agent, 1-4 ml N,N-dimethylformamide solution, aqueous solution of 10-4 mol/l inorganic salt or metal complex acid at room temperature for 10 minutes, adding 0.3-0.6 mg/ml aqueous solution of graphene oxide, mixing with extraction agent and organic dye photo-catalyst, ultrasonically treating by visible light, extracting, precipitating, centrifuging, and washing using water.