▎ 摘　　要

NOVELTY - Preparation of graphene oxide/aluminum oxide composite ceramic ultrafiltration membrane involves pouring graphene oxide into container, adding distilled water, stirring and dispersing on a constant-temperature water bath magnetic stirrer, ultrasonically dispersing by using ultrasonic disperser to obtain a graphene oxide dispersion liquid, dissolving pseudo-boehmite in the graphene oxide dispersion liquid, stirring and dispersing on a constant-temperature water bath magnetic stirrer, dripping nitric acid using constant-pressure dropping funnel, continuously stirring and peptizing to obtain graphene oxide/ aluminum oxide hydroxide mixed sol, stirring polyvinyl alcohol (PVA) solution and the mixed sol to obtain a coating solution, coating the surface of a matrix by using an immersion method, drying and calcining at high temperature. USE - Preparation of graphene oxide/aluminum oxide composite ceramic ultrafiltration membrane used in nanofiltration and reverse osmosis. ADVANTAGE - The method is simple, environmentally-friendly, provides graphene oxide/aluminum oxide composite ceramic ultrafiltration membrane with small pore diameter, and strong permeability.