▎ 摘　　要

NOVELTY - Preparing graphene oxide by peeling graphite oxide comprises adding graphite powder to concentrated sulfuric acid, uniformly stirring , then adding salt, fully stirring by oxidizing, diluting, suction-filtering and drying to obtain graphite oxide powder; (ii) mixing graphite oxide powder and alkali powder and ball milling to obtain ball milled graphite oxide powder; (iii) adding potassium permanganate to concentrated sulfuric acid, stirring, slowly adding to the ball milled graphite oxide powder of step (ii) to obtain material A, and continue stirring; (iv) adding potassium permanganate and salt to material A to react, adding water, stirring, and adding hydrogen peroxide; and (v) washing with water to neutrality, dialyzing. USE - The method is useful for preparing graphene oxide by peeling graphite oxide. ADVANTAGE - The method: has high production safety, simple process, high product stability, which reduces production cost, and can obtain single-layer graphene oxide.