▎ 摘　　要

NOVELTY - Preparing graphene oxide-carbon quantum dot reinforced copper-based composite material comprises (i) adding graphene oxide, carbon quantum dot in absolute ethyl alcohol, graphene oxide ethanol solution and carbon quantum dot ethanol solution to the copper powder for ball milling to obtain the graphene oxide-carbon quantum dot/cuprous oxide-copper suspension, (ii) filtering the suspension obtained in the step (i), vacuum drying to obtain the graphene oxide-carbon quantum dot/cuprous oxide-copper composite powder, (iii) annealing the composite powder obtained in the step (ii) under the reducing atmosphere to obtain the reducing graphene oxide-carbon quantum dot/copper composite powder, (iv) discharging the composite powder obtained in the step (iii) for discharging plasma sintering to obtain the reducing graphene oxide-carbon quantum dot/copper composite block, and (v) hot rolling composite block to obtain the graphene oxide-carbon quantum dot reinforced copper-based composite material. USE - The method is useful for preparing graphene oxide-carbon quantum dot reinforced copper-based composite material. ADVANTAGE - The method: uniformly distributes and embeds reduced graphene oxide-carbon quantum dot in the composite material on the copper substrate; has far higher tensile strength than that of pure copper; it can be used for the development and application of composite material.