▎ 摘　　要

NOVELTY - Preparing graphene comprises preparing proanthocyanidin containing organic acid solution, ultrasonically dispersing with graphene oxide for 40-60 minutes, filtering to obtain homogeneous graphene oxide mixed solution, where the concentration of graphene oxide is 0.5-2 mg/ml, the concentration of proanthocyanidin is 0.1-1 mg/ml, adjusting the solution pH of the solution to 4, reacting at 70-100 degrees C for 1-2 hours, washing the reaction product with deionized water and drying. USE - The method is useful for preparing graphene (claimed). ADVANTAGE - The method is economical, simple, environmentally-friendly and suitable for large scale production.