▎ 摘　　要

NOVELTY - High-strength porous soil heavy metal adsorption material comprises 200 pts. wt. hyperbranched polyester, 100-300 pts. wt. diglycidyl ether, 80-150 pts. wt. meso-2,3-dimercaptosuccinic acid, 10-30 pts. wt. graphene oxide, 0.5-3 pts. wt. N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC HCl), 0.5-3 pts. wt. N-hydroxysuccinimide, 0.5-5 pts. wt. triethylamine, 20-100 pts. wt. starch and 0.005-0.25 pt. wt. amylase. USE - As high-strength porous soil heavy metal adsorption material. ADVANTAGE - The high-strength porous soil heavy metal adsorption material has increased hydrophilicity, promotes the diffusion of the enzyme in the polymer and the contact probability of the metal ion and the material, improves the efficiency of pore formation and the adsorption rate of heavy metals, reversibly adsorbs heavy metal ions in complex soil environments, and solves the problems of poor mechanical strength, poor adsorption selectivity and low adsorption efficiency caused by difficult contact with metal ions due to being easily blocked by the soil. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the high-strength porous soil heavy metal adsorption material, which involves (i) dissolving amine-terminated hyperbranched polyester in dimethylformamide (DMF), and dripping diglycidyl ether to obtain the hyperbranched polyester with amine and epoxy ends respectively, (ii) dripping meso-2,3-dimercaptosuccinic acid to the reaction system of step (i), and adding triethylamine as a catalyst to obtain a polymer crosslinked network, (iii) dispersing the graphene oxide in DMF, adding to the reaction system of step (ii), dissolving N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC HCl) and N-hydroxysuccinimide in a small amount of DMF, and dripping triethylamine to the reaction system to obtain graphene oxide containing hyperbranched epoxy resin, (iv) dispersing the starch in DMF, dripping to step (iii) and stirring, and (v) removing the solvent, drying the product in an oven at 60 degrees C to obtain the corrosion-resistant polymer/biomass polymer/graphene ternary composite material, and placing in an aqueous solution containing amylase to obtain the desired porous material.