▎ 摘　　要

NOVELTY - Manufacture of graphene quantum dots involves dispersing carbon nanomaterial in mixture of sulfuric acid and nitric acid, oxidizing, bonding sulfate ion to the surface of graphene oxide, adding base, adjusting pH to 7, adding poor solvent to neutralized graphene oxide solution to form sodium sulfate salt, and separating graphene quantum dots using a centrifuge. USE - Manufacture of graphene quantum dots used as semiconductor material for electronic device and fluorescent material for energy converter. ADVANTAGE - Graphene quantum dots of various sizes and uniform size distribution are easily, economically and quickly manufactured with high yield.