▎ 摘　　要

NOVELTY - Preparation of silver-graphene nanocomposite material by two-electrode electrochemical reduction at room temperature includes at room temperature, adding silver nitrate (AgNO3) solution, diluted sulfuric acid (H2SO4) solution and polyvinylpyrrolidone (PVP) solution into a beaker, obtaining mixed solution, using graphite electrode as anode and graphene oxide-treated silicon wafer as cathode, taking the mixed solution as electrolyte, conducting electrochemical reduction at room temperature, obtaining centrifugal product and dispersing in deionized water. USE - Preparation of silver-graphene nanocomposite material. ADVANTAGE - The method is very simple, has low cost and provides graphene with high reduction degree. DETAILED DESCRIPTION - Preparation of silver-graphene nanocomposite material by two-electrode electrochemical reduction at room temperature comprises immersing silicon wafer in graphene oxide solution at room temperature for 3-8 hours, putting in vacuum drying box, drying for 6-12 hours to obtain graphene oxide-treated silicon wafer, putting at room temperature, dissolving solid AgNO3 in deionized water to prepare AgNO3 solution, putting at room temperature, dissolving solid PVP in deionized water to prepare PVP solution, standing at room temperature, diluting 98% concentrated H2SO4 using deionized water to prepare diluted H2SO4 solution, putting at room temperature, at room temperature, adding AgNO3 solution, diluted H2SO4 solution and PVP solution into a beaker, obtaining mixed solution, using graphite electrode as anode and graphene oxide-treated silicon wafer as cathode, taking the mixed solution as electrolyte, conducting electrochemical reduction at room temperature for 3-8 hours, obtaining centrifugal product and dispersing in deionized water to obtain silver-graphene nanocomposite material.