▎ 摘　　要

NOVELTY - Preparation of graphene oxide-based composite aerogel adsorbent involves adding acrylamide to graphene oxide suspension, mixing uniformly to obtain a mixed suspension, adding ammonium persulfate and N,N-methylene acrylamide to methacryloyloxyethyl trimethylammonium chloride, mixing to obtain prepolymer solution, adding polyethyleneimine aqueous solution to prepolymer solution to obtain pre-reaction solution, adding pre-reaction solution to the mixed suspension, dripping ammonium persulfate aqueous solution and N,N-methylene acrylamide aqueous solution, stirring, performing gelling reaction, washing and freeze-drying. USE - Preparation of graphene oxide-based composite aerogel adsorbent used for absorbing organic pollutants in sewage (all claimed). ADVANTAGE - The method enables preparation of composite aerogel adsorbent with excellent adsorption performance and recyclability, increases pore structure and active adsorption site of the composite aerogel based on synergistic effect of each component, improves binding force between polymer and graphene oxide matrix by step-by-step reaction, and prevents matrix from falling off during adsorption and desorption.