▎ 摘　　要

NOVELTY - Preparing core shell structure dualmetal covalently bonded three-dimensional graphene macroscopic body comprises subjecting the sodium alginate aqueous solution and the metal ion aqueous solution to a cross-linking reaction to obtain a bimetal cross-linked alginate gel, carrying out high-temperature calcination under the conditions of a protective atmosphere and a metal substrate. USE - The macroscopic body is useful in adsorption and/or catalysis (claimed) and in the field of environmental pollution treatment. ADVANTAGE - The method: is simple, economical, and environmentally friendly; has excellent adsorption and catalytic performance, controllable shape, and high yield. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for core shell structure dualmetal covalently bonded three-dimensional graphene macroscopic body prepared by the above mentioned method.