▎ 摘　　要

NOVELTY - Graphene sulfonate preparation involves adding graphene oxide into deionized water withstirring under ultrasonic dispersion treatment to obtain graphene oxide dispersion, and then adding chlorosulfonic acid to the obtained graphene oxide dispersion to prepare a mixture. The prepared mixture is cooled to obtain sulfonated graphene oxide. The obtained sulfonated graphene oxide is irradiated to obtain the graphene sulfonate. USE - Method for preparing graphene sulfonate used for treating enrofloxacin, tetracycline hydrochloride or oxytetracycline in water (all claimed). ADVANTAGE - The method prepares the graphene sulfonate in a simple and cost-effective manner with significantly improved ozone degradation, good adsorption, and better purification effect. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic picture of prepared graphene sulfonate. (Drawing includes non-English language text).