▎ 摘　　要

NOVELTY - Preparing zinc oxide-graphene oxide composite nanomaterial involves performing reaction between zinc, graphene oxide and alkali at 80 degrees C for 30 minutes to 5 hours to obtain solution reaction system. Alcohol is utilized as solvent. The solution reaction system is cooled at room temperature and then hexane is added to obtain mixture. The obtained mixture is kept overnight at 0 degrees C and then centrifuged and washed to obtain another mixture. The obtained another mixture is purified and then dried to obtain zinc oxide-graphene oxide composite nanomaterial. USE - Method for preparing zinc oxide-graphene oxide composite nanomaterial used for preparing disinfectant and inhibiting microbial growth and Escherichia coli (claimed). ADVANTAGE - The method enables to prepare zinc oxide-graphene oxide composite nanomaterial in a simple and cost effective manner.