▎ 摘　　要

NOVELTY - The preparation method of graphene oxide involves dripping 6.6 g microcrystalline graphite to a reaction vessel containing 260-280 ml concentrated sulfuric acid, adding oxidant under the ice bath condition, uniformly stirring, placing the mixed system in the water bath, reacting at 35.5 degrees C, dripping 100 ml deionized water, suction-filtering the filtrate, leaching using 15% hydrochloric acid, ultrasonically dispersing, and drying. USE - Preparation method of graphene oxide (claimed). ADVANTAGE - The method enables preparation of graphene oxide by simple process.