▎ 摘　　要

NOVELTY - Preparing a graphene-based surface ion-imprinted material comprises (1) mixing the graphene oxide suspension, acrylic acid monomer and template gallium ion solution, adding a crosslinking agent and an initiator, and stirring at room temperature under a nitrogen atmosphere, (2) heating up to 40-90°C and stirring for 1-4 hours, (3) cooling down, filtering the suspension, collecting the viscous product, washing with deionized water until neutral, and drying to obtain the intermediate product, (4) washing the intermediate product with hydrochloric acid solution to remove template gallium ions, washing with deionized water until the washing liquid is neutral, and drying to obtain the graphene-based surface ion imprinted material selectively adsorbing gallium ions. USE - The method is useful for preparing a graphene-based surface ion-imprinted material, which is useful in selective adsorption of gallium ions in the acid leaching solution of fly ash (claimed). Can be used in recovery and extraction of gallium. ADVANTAGE - The graphene-based surface ion imprinting material can realize the selective adsorption of gallium ions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene-based surface ion imprinting material for selectively adsorbing gallium ions.