▎ 摘　　要

NOVELTY - Preparing high-throughput graphene oxide composite film comprises (i) taking mixed solution of cross-linking agent and graphene oxide, and performing ultrasonic constant temperature stirring uniformly; (ii) coating the mixed solution of graphene oxide and cross-linked agent on the polymer hydrophobic micro-porous base film according to the set thickness; and (iii) naturally drying the polymer hydrophobic micropore base film coated in step (ii) for more than 12 hours in shady place. USE - The method is useful for preparing high-throughput graphene oxide composite film used for membrane distillation. ADVANTAGE - The method improves the interlayer distance and average nano-aperture of the graphene oxide nano-sheet after crosslinking, changes the surface charging and hydrophilic hydrophobicity of graphene oxide coating layer, and improves the pollution resistance and realizes composite film has high flux and good water quality.