▎ 摘　　要

NOVELTY - Graphene film with molecular recognition and fixing functions is prepared by simple suction filtration technology to intercalate host molecules with molecular recognition and fixation functions such as beta-cyclodextrin between graphenes to form a membrane with a diameter of 5 cm. USE - Graphene film with molecular recognition and fixing functions. ADVANTAGE - The graphene film with molecular recognition and fixing functions realizes applications such as water purification and solid phase extraction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene film with molecular recognition and fixing function, which involves: (A) mixing the graphene oxide solution with the main molecule solution and ammonia water; (B) adding hydrazine hydrate; (C) fully mixing; (D) filling in the container to obtain black uniformly dispersed aqueous solution; (E) filtering the black solution by microporous film to form film; and (F) forming graphene film with molecular recognition and fixing function.