▎ 摘　　要

NOVELTY - Manufacture of graphene oxide involves adding graphite powder to N-methyl morpholine-N-oxide solution, performing ultrasonic vibration treatment, uniformly mixing, adding acid and potassium permanganate, performing ultrasonic vibration treatment under thermal insulation, introducing oxygen, stirring, obtaining precipitate by centrifugation, washing precipitate and vacuum-freeze drying. USE - Manufacture of graphene oxide (claimed). ADVANTAGE - The method efficiently enables manufacture of graphene oxide by environmentally-friendly and economical process.