▎ 摘　　要

NOVELTY - Preparing a graphene oxide/silica composite filter membrane with ultra-high water flux with selective permeability, comprises providing water and absolute ethanol, and mixing to obtain a mixed solvent of water and ethanol, adding graphene oxide to the mixed solvent and stir to obtain a suspension, adding buffer to the suspension, stirring, and adjusting the pH of the suspension, adding silane into the suspension, adjusting the pH, and performing ultrasonic treatment, stirring and mixing, hydrolyzing the silane to obtain a graphene oxide/silica composite solution, providing a substrate, and preparing a graphene oxide/silica composite filter membrane with selective permeability and ultra-high water flux on the substrate by using the graphene oxide/silica composite solution. USE - The method for preparing graphene oxide/silica composite filter membrane with ultra-high water flux with selective permeability. ADVANTAGE - The method enables to prepare graphene oxide/silica composite filter film with selective permeability of ultra-high water flux by in-situ hydrolysis of graphene oxide surface large amount of silane, which realizes the full coverage of the silica nano-particles of graphene oxide surface, and increases the aperture in the filter membrane, which can obviously improve the water flux of filter membrane and improves the filtering efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for membrane with selective permeability of ultra-high water flux, obtained by the method as mentioned above.