▎ 摘　　要

NOVELTY - Metal-adsorbing composite material based on magnetic graphene oxide comprises hybrid material, magnetic graphene oxide covalently bonded to at least one first coupling reagent, which is an alkylpolyamine in which MGO-A is MGO activated by the introduction of acid groups, and MGO is magnetic graphene oxide, formed by coated magnetic nanoparticles, modified with at least amino groups and / or hydroxyl groups on their surface , coupled by physical forces and covalent bonds to graphene oxide, where the covalent bond is an amide or ester bond between amino or hydroxyl groups of the modified coated magnetic nanoparticles and acid groups present in the graphene oxide sheets and ligand comprising a chelating functional group, ligand being bound to magnetic graphene oxide via at least first coupling reagent. USE - Metal-adsorbing composite material based on magnetic graphene oxide used in the decontamination and treatment of spills. ADVANTAGE - The metal-adsorbing composite material based on magnetic graphene oxide has unique physico-chemical properties, high surface area, and highly active surface locations. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) hybrid material, which comprises activated magnetic graphene oxide covalently bonded to at least one first coupling reagent, which is an alkylpolyamine where MGO-A is activated MGO by introducing acid groups, and MGO is magnetic graphene oxide, formed by coated magnetic nanoparticles, modified with at least amino groups and / or hydroxyl groups on their surface coupled by physical forces and covalent bonds to graphene oxide, where the covalent bond is an amide or ester bond between amino or hydroxyl groups of the modified coated magnetic nanoparticles and acid groups present in the graphene oxide sheets; (2) a precursor material, where second coupling reagent is glutaraldehyde; (3) a intermediate precursor material, which comprises precursor material bound to thiocarbonohydrazide; and (4) a method for preparing metal-adsorbing composite material based on magnetic graphene oxide, which involves reacting activated magnetic graphene oxide with at least one first coupling reagent, which is a polyalkylamine, obtaining the product, reacting the product resulting from the previous step with: or a ligand comprising a chelating functional group, or or previously, with a second coupling reagent, and then with a ligand.