▎ 摘　　要

NOVELTY - Magnetic polyaniline/graphene composite material comprises graphene, magnetic nanoparticle and polyaniline. In the composite material, the graphene is framework and the magnetic nanoparticles and polyaniline are dispersed in the surface of the graphene framework. USE - The composite material is useful for removing hexavalent chromium in aqueous solution (claimed). ADVANTAGE - The composite material has good adsorption capacity and is environmentally friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the magnetic polyaniline/graphene composite material, comprising (i) taking graphene oxide and ferrous chloride tetrahydrate as raw material, adding aqueous ammonia and preparing iron oxide/graphene composite at pH 10, and (ii) sequentially adding ammonium persulfate, toluenesulfonic acid and aniline monomer into iron oxide/graphene composite, ultrasonic processing in ice bath and carrying out polymerization conditions.