▎ 摘　　要

NOVELTY - Preparing graphene oxide powder comprises providing an aqueous solution of graphene oxide quantum dots, adding graphite oxide in an aqueous solution of graphene oxide quantum dots to form a mixed solution of graphene oxide and ammonium salts of the quantum dot, adding aprotic polar solvent to the mixed solution of the graphene oxide and ammonium salts of the quantum dot to obtain quantum dots graphene oxide and mixed salts to precipitate, heat treating the oxidized graphene quantum dots and mixed salts precipitate to remove the salts and quantum dots. USE - The method is useful for preparing graphene oxide powder (claimed). ADVANTAGE - The method is capable of simply preparing graphene oxide powder in a rapid manner with good water solubility.