▎ 摘　　要

NOVELTY - Method for preparing graphene-loaded copper nanoparticles, involves (a) dispersing graphene oxide to deionized water, and ultrasonically treating using ultrasonic cleaner to obtain aqueous solution of graphene oxide, (b) dissolving copper sulfate pentahydrate and polyethylene glycol in deionized water, uniformly mixing with solution, and ultrasonically treating, (c) uniformly mixing hydrazine hydrate and aqueous ammonia to concentrated ammonia solution of hydrazine hydrate, dripping concentrated ammonia solution to mixed solution, and performing water bath stirring treatment, (d) pouring obtained solution to high-pressure reaction kettle, and naturally cooling, (e) washing obtained reaction product for multiple times with deionized water and absolute ethanol, and (f) loading obtained solution to container at a thickness of 3-8 mm, and vacuum freeze-drying. USE - Method for preparing graphene-loaded copper nanoparticles used for lubricating oil additives. ADVANTAGE - The method overcomes the problems that graphene particle size cannot be controlled and the phenomenon of hard agglomeration. DETAILED DESCRIPTION - Method for preparing graphene-loaded copper nanoparticles, involves (a) dispersing 0.1-0.3 g graphene oxide to deionized water at a ratio of 1 mg/ml, and ultrasonically treating using ultrasonic cleaner to obtain aqueous solution of graphene oxide, (b) dissolving 0.4-1.2 g copper sulfate pentahydrate and 0.01-0.03 g polyethylene glycol in deionized water, uniformly mixing with solution, and ultrasonically treating, (c) uniformly mixing 3.5-10.5 ml hydrazine hydrate and 7-21 ml aqueous ammonia to concentrated ammonia solution of hydrazine hydrate, dripping concentrated ammonia solution to mixed solution, and performing water bath stirring treatment in magnetic stirring water bath kettle, (d) pouring obtained solution to high-pressure reaction kettle, and naturally cooling after reaction in electric heating constant-temperature drying oven environment, (e) washing obtained reaction product for multiple times with deionized water and absolute ethanol, and preparing solution after washing precursor solution, and (f) loading obtained solution to container at a thickness of 3-8 mm, and vacuum freeze-drying, where the temperature of water vapor condenser is less than 50 degrees C under vacuum degree of below 0.5 mbar for 10-15 hours, and after completing freeze-drying process to obtain target product.