▎ 摘　　要

NOVELTY - Synthesis of nano-silver/reduction graphene composite material involves dissolving polyethylene glycol in deionized water, adding graphene oxide, ultrasonically oscillating, obtaining mixed solution of graphene oxide, dissolving silver nitrate in deionized water, adding aqueous ammonia, precipitating, mixing mixed solution of graphene oxide and obtained silver-ammonium hydroxide solution, adding isopropanol, stirring, placing resultant mixed solution in a container, introducing nitrogen gas, sealing the container, irradiating electron beam, removing unreacted ion, and drying. USE - Synthesis of nano-silver/reduction graphene composite material by electron beam irradiation (claimed). ADVANTAGE - The method enables economical synthesis of nano-silver/reduction graphene composite material with high reduction efficiency, under mild reaction condition, without adding reducing reagent, by simple and environmentally-friendly process. DETAILED DESCRIPTION - Synthesis of nano-silver/reduction graphene composite material involves weighing predetermined amount of polyethylene glycol (PEG1500) using electronic scale, dissolving polyethylene glycol in deionized water, formulating into 0.10-0.30 g/L polyethylene glycol solution, adding predetermined amount of graphene oxide, ultrasonically oscillating for 5-10 minutes, obtaining mixed solution of graphene oxide, weighing predetermined amount of soluble silver nitrate using electronic scale, dissolving silver nitrate in deionized water, formulating into 0.05-0.15 mol/L silver nitrate solution, adding predetermined amount of aqueous ammonia until silver hydroxide is precipitated, mixing mixed solution of graphene oxide and obtained silver-ammonium hydroxide (Ag(NH3)2OH) solution in volume ratio of 80:1-60:1, adding 50-80 mL isopropanol, magnetically stirring for 10-30 minutes, placing resultant mixed solution in a sealed container, introducing nitrogen gas for 10-30 minutes such that the solution is saturated in nitrogen, sealing the container, irradiating electron beam at 2.5 MeV, 40 mA and 210-500 KGy, sequentially washing obtained product with ethanol and distilled water, centrifuging at high speed, removing unreacted ion, and drying at 40-80 degrees C for 4-8 hours in a vacuum oven. The mass ratio of polyethylene glycol and graphene oxide is 0.3:1-0.1:1.