▎ 摘　　要

NOVELTY - Method for preparing a graphene oxide (GO)-polysulfone (PSF) composite film selection layer involves adding PSF particles to a dimethylacetamide solution, adding GO particles, carrying out ultrasonic magnetic stirring until the casting film liquid is grey transparent, soaking a base film in glycerol, taking out the base film, removing excess glycerol on the surface of the film, maintaining the film surface dry, utilizing a phase inversion method to form the casting liquid film on the surface of the treated base film, washing the film and storing in deionized water. USE - The method is useful for preparing a graphene oxide-polysulfone composite film selection layer used in a membrane bioreactor (claimed). ADVANTAGE - The method provides the product with increased hydrophilicity, antibacterial performance and anti-pollution ability and reduced cost compared with the GO-PSF mixed film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the composite film selection layer prepared by the method.