▎ 摘　　要

NOVELTY - Preparing flexible graphene oxide/metal organic frame composite filter film involves weighing graphene oxide, zinc nitrate hexahydrate and 2-methylimidazole, adding them to the same solvent, preparing uniform graphene oxide dispersion liquid, zinc nitrate solution and 2-methylimidazole solution, adding the zinc nitrate solution into the graphene oxide dispersion liquid, adding 2-methyl imidazole solution, mixing uniformly to obtain the precursor mixed solution, pouring the obtained precursor mixture into the reactor, place it in an oven and heat it to obtain a suspension of zeolitic imidazole framework 8- graphene oxide composite particles, centrifuging, washing and drying the suspension to obtain a zeolitic imidazole framework 8-graphene oxide composite particles. USE - Method for preparing flexible graphene oxide/metal organic frame composite filter film. ADVANTAGE - The method enables to prepare flexible graphene oxide/metal organic frame composite filter film with excellent retention performance, has more abundant pore structure and improves the pollutant filtering performance. DETAILED DESCRIPTION - Preparing flexible graphene oxide/metal organic frame composite filter film involves weighing graphene oxide, zinc nitrate hexahydrate and 2-methylimidazole, adding them to the same solvent, preparing uniform graphene oxide dispersion liquid, zinc nitrate solution and 2-methylimidazole solution, adding the zinc nitrate solution into the graphene oxide dispersion liquid, adding 2-methyl imidazole solution, mixing uniformly to obtain the precursor mixed solution, pouring the obtained precursor mixture into the reactor, place it in an oven and heat it to obtain a suspension of zeolitic imidazole framework 8-graphene oxide composite particles, centrifuging, washing and drying the suspension to obtain a zeolitic imidazole framework 8-graphene oxide composite particles, disperse graphene oxide uniformly in water, adding zeolitic imidazole framework 8-graphene oxide composite particles and cross-linking agent prepared to obtain the suction filtrate, sucking the filtrate onto the polymer bottom membrane, and drying it in an oven.