▎ 摘　　要

NOVELTY - A graphene oxide adsorption film comprises a porous polymer base film, a carbon nanotube layer, which is arranged on the surface of the polymer base film, and a graphene oxide layer, which is arranged on the surface of the carbon nanotube layer. USE - The graphene oxide adsorption film is useful for purifying water containing ionic metal, colloidal metal and organic substance with a molecular weight of 100-1000 (all claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene oxide adsorption film, which involves: (a) providing a graphene oxide aqueous solution; (b) providing a carbon nanotube suspension; (c) using a filtration method to make the carbon nanotube suspension form a carbon nanotube layer on the surface of the porous polymer base film; and (d) using filtration method to make the graphene oxide aqueous solution to form a graphene oxide layer on the surface of the carbon nanotube layer.