▎ 摘　　要

NOVELTY - Use of mesoporous silica nanosheet composite film in wastewater treatment, where mesoporous silica nanosheet composite film is prepared by (a) uniformly dispersing graphene oxide or graphene, organosilicon compound and surfactant in a solvent, performing hydrolysis reaction, and removing the surfactant to obtain mesoporous silica nanosheets, and (b) mixing the mesoporous silica nanosheets with a composite component, and dispersing into a film to obtain the product, is claimed. USE - The mesoporous silica nanosheet composite film is useful in wastewater treatment (claimed). ADVANTAGE - The composite film effectively prevents the passage of heavy metal ions and organic pollutants, enrich the radioactive elements, has high selectivity, fast passing rate of water molecules, excellent stability and biological safety, high repeatability and less time consumption, and is ideal, prepared by simple process and suitable for industrial production.