▎ 摘　　要

NOVELTY - Preparation of polyamidoxime/graphene nanoribbon composite aerogel involves: axially cutting multi-walled carbon nanotubes into graphene oxide nanoribbons by using potassium permanganate oxidation method; then adding to a mixed solution of acrylonitrile and ammonium persulfate, and preliminarily making polyacrylonitrile/graphene nanoribbons composite hydrogels by solvothermal polymerization method; and using cyano and hydroxylamine to convert the cyano group into an amidoxime group under alkaline conditions to obtain polyamidoxime/graphene nanoribbon composite hydrogel, and finally carrying out low-temperature freeze-drying. USE - The method is useful for preparing polyamidoxime/graphene nanoribbon composite aerogel, which is useful as adsorbent for separation and enrichment of uranium (claimed). ADVANTAGE - The polyamidoxime/graphene nanoribbon composite aerogel: has high grafting rate, uniform density distribution and stable structural performance; and is rich in uranium-specific functional groups, which can be effectively and selectively remove uranium from different uranium-containing water components. The adsorbed aerogel can be quickly separated and recovered from the solid-liquid system without pollution to the environment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for separating and enriching uranium by using the polyamidoxime/graphene nanoribbon composite aerogel.