▎ 摘　　要

NOVELTY - Synthesis of graphene oxide involves dispersing graphite powder in concentrated sulfuric acid, adding phosphorus(V)oxide, ultrasonically treating the obtained mixture for 10 minutes, adding potassium permanganate and sodium nitrate to the resulting mixture, diluting with distilled water, raising the temperature of the mixture to 95° C for 1.5 hours, adding additional amount of distilled water, filtering the precipitate on a Schott filter, washing the precipitate with distilled water to a neutral pH value, drying at 65° C for 5 hours, and dispersing in distilled water in an ultrasonic bath for 1 hour. USE - Synthesis of graphene oxide.