▎ 摘　　要

NOVELTY - Method for preparing graphene by reducing graphene oxide, involves dispersing graphene oxide ultrasonically, mixing with reducing agent quercetin, where the mass ratio of graphene oxide and the reducing agent is 0.1:1-10:1, reacting at -5 to 100℃ for 1-72 hours, washing with ethanol and deionized water, and drying to obtain graphene material. USE - The method is useful for preparing graphene by reduction of graphene oxide, which is useful in conductive, radiating, sensing and biological medicine fields. ADVANTAGE - The method is simple and easy, does not need expensive large device, can realize the low temperature of various graphene oxide material, high efficiency, and a lot of preparation. The reaction condition is mild, and the reducing agent is safe and non-toxic.