▎ 摘　　要

NOVELTY - Preparation of oxygenous graphene fluorescence quantum dot involves adding graphite powder dispersed in tetrahydrofuran solution under the protection of nitrogen, adding metal lithium and naphthalene in the obtained graphite powder tetrahydrofuran dispersion liquid, adding halogenated organic solvent in the mixed solution, obtaining solid product, washing and drying, obtaining alkylated graphene, dispersing alkylated graphene in the organic solvent, ultrasonically dispersing, then transferring to the reaction kettle to react, and cooling to room temperature. USE - Preparation of oxygenous graphene fluorescence quantum dot used in sensor, biological labeling material and energy material. ADVANTAGE - The oxygenous graphene fluorescence quantum dot is efficiently prepared with high efficiency, and excellent dispersibility.