▎ 摘　　要

NOVELTY - An aminated graphene aerogel adsorbent comprises three-dimensional porous network structure self-assembled from aminated graphene sheet layer, and amino group that does not react with graphene oxide. The presence of amino group provides additional adsorption sites for graphene aerogels. The aminated graphene sheet layer has covalent bond formed between amino and graphene oxide by hydrothermal reduction reaction. USE - Aminated graphene aerogel adsorbent used in adsorbing chromium(IV) ion (claimed). ADVANTAGE - The method has simple operation and low cost. The product has three-dimensional porous net-shaped structure, extremely small density, large specific surface area and absorption capacity up to 361.48 mg/g, and exhibits excellent absorption effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of the aminated graphene aerogel adsorbent comprising uniformly dispersing single layer graphene oxide, tetraethylenepentamine, and water mixture, hydrothermal reacting to obtain intermediate product, dialyzing to neutral dialysis liquid to obtain aminated graphene hydrogel, and freeze-drying; and (2) application of aminated graphene aerogel adsorbent comprising taking adsorbent into liquid to be treated, reacting at 20-70 degrees C for 0.1-6 hours, filtering and separating, and detecting chromium(IV) content.