▎ 摘　　要

NOVELTY - Preparing graphene comprises: (1) dispersing graphene oxide in water to obtain a uniform dispersion of graphene oxide; (2) adding soluble high molecular polymer to the graphene oxide dispersion to obtain a mixed solution of high molecular polymer and graphite oxide; (3) adding guanidine hydrochloride to the obtained mixed solution, and adding alkaline solution to regulate the pH value to 8-12, placing the obtained product in an oil bath pan, stirring the reaction product at 60-100 degrees C for 1-5 hours, followed by centrifuging and washing. USE - The method is useful for preparing graphene (claimed), which is useful for sensor and electric device. ADVANTAGE - The method is capable of simply and easily preparing the graphene with less equipment usage. DETAILED DESCRIPTION - Preparing graphene comprises: (1) dispersing graphene oxide in water to obtain a uniform dispersion of graphene oxide; (2) adding soluble high molecular polymer to the graphene oxide dispersion to obtain a mixed solution of high molecular polymer and graphite oxide; (3) adding guanidine hydrochloride to the obtained mixed solution, where the mass ratio of guanidine hydrochloride and graphene oxide is 10:1-100:1, and adding alkaline solution to regulate the pH value to 8-12, placing the obtained product in an oil bath pan, stirring the reaction product at 60-100 degrees C for 1-5 hours, followed by centrifuging and washing.