▎ 摘　　要

NOVELTY - Graphene preparation involves utilizing tea polyphenol-green tea juice. Graphite oxide is processed by ultrasonic peeling and then utilized to prepare graphene oxide solution in which the ratio of graphene oxide and green tea juice is 1:2-1:20. The solution is transferred to an agitated reactor and then processed hydrothermally at 80-160 degrees C for 6-14 hours to obtain graphene solution. USE - Method for preparing graphene (claimed). ADVANTAGE - The method is simple, cost-effective and eco-friendly and enables large scale production of stable grapheme having good dispersibility and biocompatibility.