▎ 摘　　要

NOVELTY - Preparing industrial graphene oxide involves mixing the concentrated sulfuric acid with flake graphite, heating to react to obtain the acidic mixture, cooling the acidic mixture material, adding potassium permanganate and pure water to react, and after finishing reaction, adding hydrogen peroxide to obtain the graphite oxide solution. The product is centrifuged and washed to neutral. The obtained solution is formulated as suspension which is ultrasonically treated and freeze-dried to obtain the graphene oxide. USE - Method for preparing industrial graphene oxide (claimed). ADVANTAGE - The method enables to prepare industrial graphene oxide which has large specific surface area, stable layer number and easy centrifugation.