▎ 摘　　要

NOVELTY - Composite nanofiltration membrane is obtained by depositing aminocucurbituril intercalated graphene on a porous base film which is made of graphene oxide, resveratrol, carboxymethyl hydroxypropyl guar gum, and polyethyleneimine as raw materials and using spinning method. USE - Composite nanofiltration membrane. ADVANTAGE - The composite nanofiltration membrane effectively improves distribution of cucurbituril between graphene layers by using resveratrol as a co-solution intercalant and reducing agent, significantly increases interlayer distance of graphene and effectively improves separation ability of the deposited graphene membrane, and has good stability, high organic retention rate and high water flux. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite nanofiltration membrane, which involves: (A) preparing cucurbituril intercalated graphene, preparing graphene oxide powder by Hummers method; (B) preparing cucurbituril intercalated graphene, dispersing graphene oxide powder in an ethanol dispersion of resveratrol, and ultrasonically dispersing at 50-60 degrees C for 10-12 hours, obtaining graphene dispersion; (C) adding aminocucurbituril and continue ultrasonic dispersion for 5-6 hours to obtain aminocucurbituril intercalated graphene dispersion; (D) dispersung graphene oxide powder in the ethanol dispersion of resveratrol at 50-60 degrees C for 10-12 hours, obtaining graphene dispersion, adding carboxymethyl hydroxypropyl to aqueous solution of guar gum and polyethyleneimine to obtain the spinning solution; (E) filling the spinning solution into the injection pump of the spinning device, and obtaining the nanofiber membrane by electrostatic spinning. The nanofiber membrane is removed from the metal substrate and soaked in the crosslinking agent solution; and (F) using vacuum filtration to deposit different amounts of aminocucurbituril intercalated graphene dispersion on the base membrane to obtain composite nanofiltration membrane.