▎ 摘　　要

NOVELTY - A graphene oxide composite nanofiltration composite membrane comprises a nonwoven fabric support layer, a polymer intermediate layer and a functionalized nano-scale separation layer. The nonwoven fabric support layer, polymer intermediate layer and the functionalized nano-scale separation layer are sequentially arranged from bottom to top. The functionalized nano-scale separation layer comprises monolithic nano-graphene oxide. USE - Graphene oxide composite nanofiltration membrane. ADVANTAGE - The graphene oxide composite nanofiltration membrane has excellent ion selective separation function, high hydrophilicity, improved ion transport rate and large surface area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method for preparing the graphene oxide composite nanofiltration composite membrane.