▎ 摘　　要

NOVELTY - Preparing graphene oxide composite material comprises (i) preparing graphene oxide by using flake graphite as raw material, and freeze-drying to obtain dried graphene oxide, and (ii) dissolving the obtained graphene oxide in anhydrous N,N-dimethylformamide to obtain graphene oxide solution, adding compound A i.e. 1,3-bis(tris(hydroxymethyl)methylamino)propane, mixing well, performing esterification and amidation reactions under anhydrous catalyst conditions, and drying to obtain final product. USE - The graphene oxide composite material is useful for selectively adsorbing and separating inorganic ions and organic pollutants in aqueous solutions (claimed). ADVANTAGE - The graphene oxide composite material: is stable chemically bonded composite product; exhibit different adsorption capacity for various substances due to different adsorption mechanisms; shows the adsorption selectivity of organic matter and the adsorption repellency of certain metal ions, which can realize the efficient adsorption of organic matter in the aqueous solution and the separation of the mixture of inorganic and organic pollutants; and has excellent repeated utilization performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) graphene oxide composite material prepared by above method; and (2) use of graphene oxide composite material for selectively adsorbing and separating inorganic ions and organic pollutants in aqueous solutions.