▎ 摘　　要

NOVELTY - Graphene oxide is added to a mixed solvent of water and organic solvent and ultrasonically dispersed for 1-2 hours, to obtain 0.25 mg/mL mixed solution. 5% Silver nitrate aqueous solution is added to the mixed solution and magnetically stirred for 10 minutes, to obtain nanosilver/graphene oxide mixed solution. The mass ratio of silver nitrate and graphene oxide is 1:1-50:1. The solution is transferred to an oil bath for reflux reaction for 10-17 hours at 100-150 degrees C, filtered, washed, and dried to obtain a graphene-based nanosilver composite. USE - Preparation of graphene-based nanosilver composite (claimed). ADVANTAGE - The method uses one-step method for reduction-oxidation of graphene and nanosilver particles, which is simple, mild in reaction conditions, and convenient to operate. The nanosilver particles of which the particle size is 16-20 nm in the prepared composite are uniformly distributed on the surface of graphene. The particles are uniform in size, and the density of particles can be controlled by changing the mass ratio of silver nitride and graphene oxide. The method is easy to operate, capable of controlling the product, and environmentally-friendly.