▎ 摘 要
NOVELTY - A carbon source chosen from coal and coke is exposed (12) to an oxidant, to form (14) graphene quantum dots. USE - Manufacture of graphene quantum dots used for road stickers, road signs, coatings, clothing, paints and photographic processing materials (all claimed). ADVANTAGE - The method enables manufacture of graphene quantum dots having reduced surface impurities, with excellent quantum yield. DESCRIPTION OF DRAWING(S) - The drawing shows schematic view explaining manufacture of graphene quantum dots. Exposure of carbon source (12) Formation of quantum dots (14) Separation of quantum dots (16) Enhancement of quantum yield of quantum dots (18) Reduction of quantum dots (20)