▎ 摘　　要

NOVELTY - Preparing graphene comprises adding a reducing agent into graphite oxide dispersion liquid, reacting under heating conditions, after reacting, cooling to room temperature, and centrifuging to obtain graphene, where the reducing agent is sodium diphenylamine sulfonate. USE - The graphene is useful in catalysis, and energy transfer storage and sensor devices. ADVANTAGE - The method: can reduce graphite oxide completely without the addition of any stabilizing agent and dispersing agent; has simple purification process and short cycle; separates the product easily; produces graphene product with least impurity elements; controls the process flow; carries out reaction under normal pressure conditions; utilizes simple device; and is suitable for industrial production.