▎ 摘　　要

NOVELTY - Preparing graphene comprises (i) stirring the graphite raw material with organic solvent, filtering, filter cake graphite processing at high temperature under the protection of inert gas, (ii) adding alkali solution, pro-oxidant and placing in the sealed space, oxygen is inflated to a certain pressure in the sealed space, reacting, carrying out solid-liquid separation, the solid phase is graphene oxide, (iii) reducing graphene oxide into graphene oxide aqueous solution, adjusting pH, ultraviolet light irradiating, reducing, (iv) reducing completely, filtering and drying to obtain the product. USE - The method is useful for preparing graphene (claimed). ADVANTAGE - The graphene oxide is of large size, easy to fully peel off and form uniform graphene oxide dispersion solution under gentle mechanical stirring, avoids usage of large amount of concentrated sulfuric acid, reducing the discharging of three wastes, is environment-friendly, economical and avoids the use of reducing agent.