▎ 摘　　要

NOVELTY - Production of graphene/silver nanoparticle composite material comprises taking crystalline flake graphite powder as raw material, using concentrated sulfuric acid, sodium nitrate and potassium permanganate as oxidants, and washing using hydrogen peroxide, diluted hydrochloric acid, absolute ethyl alcohol and distilled water to obtain purified oxidized graphite alkene; and adding 0.01-0.1 M silver nitrate (AgNO3) solution to graphene oxide solution, mixing them, standing at room temperature for several hours to obtain all dimensionality of graphene/silver nanoparticle composite material. USE - Method for producing graphene/silver nanoparticle composite material for use in field of catalysis. ADVANTAGE - The method has high specific surface area, can adjust the shape and size of the material, is provided with Raman enhancement effect, has energy storage, has good friction, has biological detection, no pollution, has low energy consumption and is convenient. DETAILED DESCRIPTION - Production of graphene/silver nanoparticle composite material comprises taking crystalline flake graphite powder as raw material, using concentrated sulfuric acid, sodium nitrate and potassium permanganate as oxidants, and washing using hydrogen peroxide, diluted hydrochloric acid, absolute ethyl alcohol and distilled water to obtain purified oxidized graphite alkene; and adding 0.01-0.1 M AgNO3 solution to graphene oxide solution at a ratio of 1:1-1:10 ratio, where the concentration of graphene oxide solution is greater than or equal to 0.5 mg/mL, mixing them, standing at room temperature for several hours to obtain all dimensionality of graphene/silver nanoparticle composite material.