▎ 摘　　要

NOVELTY - Preparation of nitro-graphene involves taking graphite rod as anode, platinum as cathode and diluted sulfuric acid as electrolyte, boosting, stripping graphite rod, generating exchange-split graphene (ESG), carrying out separation, washing, and drying in vacuum drying box; oxidizing ESG to exchange-split graphene oxide (ESGO) by chemical oxidation, washing until neutral, freezing, and drying; preparing graphene, and dispersing in dimethylformamide for 30-60 minutes; adding azide reagent in ESGO, stirring, reacting for 4-7 days to generate black solid, and subjecting to centrifugal separation. USE - Method for preparing nitro-graphene (claimed). ADVANTAGE - The method avoids high temperature occurrence in reaction process and increases safety. DETAILED DESCRIPTION - Preparation of nitro-graphene comprises taking graphite rod as anode, platinum as cathode and diluted sulfuric acid as electrolyte, boosting, stripping graphite rod, generating exchange-split graphene (ESG), carrying out separation, washing, and drying in vacuum drying box; oxidizing ESG to exchange-split graphene oxide (ESGO) by chemical oxidation, washing until neutral, freezing, and drying; preparing graphene, and dispersing in dimethylformamide for 30-60 minutes; adding azide reagent in ESGO, stirring, reacting for 4-7 days to generate black solid, subjecting precipitate to centrifugal separation, reacting at 70-95 degrees C for 12-36 hours, generating ESG-nickel-cobalt binary oxide by centrifugation, and washing protonic acid for 20-30 hours to generate ESG-amine at 50-70 degrees C; and adding ESG-amine, dispersing in solvent under action of catalyst, oxidizing into nitrogen dioxide, generating graphene, washing, separating, and freezing and drying to obtain ESG-nitrogen dioxide powder.