▎ 摘　　要

NOVELTY - Oxidized graphene-polyaniline-sodium alginate gel sphere comprises sodium alginate gel sphere, polyaniline and graphene; and polyaniline and graphene is embedded in the sodium alginate gel sphere. USE - The oxidized graphene-polyaniline-sodium alginate gel sphere is useful for removing heavy metals in water (claimed). ADVANTAGE - The oxidized graphene-polyaniline-sodium alginate gel sphere has high adsorption efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparation of oxidized graphene-polyaniline-sodium alginate gel sphere comprising adding polyaniline modified graphene oxide and sodium alginate into the water, dispersing evenly to obtain graphene-polyaniline-sodium alginate mixture, then dropping the mixed solution into a calcium chloride solution, and curing to obtain final product; (2) oxidized graphene-polyaniline-sodium alginate gel sphere is obtained by above method; and (3) use of oxidizing graphene-polyaniline-sodium alginate gel sphere for removing heavy metal lead ions in a water comprising adding the oxidized graphene-polyaniline-sodium alginate gel sphere into a water containing heavy metal lead ions, and carrying out oscillating adsorption.