▎ 摘　　要

NOVELTY - An ionic liquid modified graphene oxide/polymer composite film comprises 100 pts. wt. polymer film material, 0.1-2 pts. wt. ionic liquid modified graphene oxide powder, where the ionic liquid-modified graphene oxide powder is prepared by bonding ionic liquid to a silanized graphene oxide layer and surface by bonding to obtain the finished product. USE - Ionic liquid modified graphene oxide/polymer composite film for use in pervaporation separation of alcohol/water system. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing an ionic liquid modified graphene oxide/polymer composite film, which involves dispersing graphene oxide in organic solvent A, adding a silane coupling agent, stirring the reaction at 60-100 degrees C for 6-18 hours, filtering and retaining the solid, and washing and drying to prepare a silylated graphene oxide powder, dispersing the silylated graphene oxide powder in an organic solvent B in which an ionic liquid is dissolved, stirring at 60-100 degrees C for 6-18 hours, cooling to room temperature, and filtering and retaining the solids, after washing and drying to obtain a ionic liquid modified graphene oxide powder, adding a polymer polymer membrane material to an alcohol solvent and stirring to obtain a polymer polymer membrane material solution, adding the ionic liquid-modified graphene oxide powder to an alcohol solvent, and stirring to form a uniform suspension, and further preparing the polymer film, mixing the material solution with polymer film, stirring well until uniform to obtain a casting solution, standing and defoaming the mixture, scraping and molding the defoamed casting solution to obtain the finished product (2) a use of ionic liquid modified graphene oxide/polymer composite film for use in pervaporation separation of alcohol/water system.