▎ 摘　　要

NOVELTY - Graphene oxide surface arsenic-antimony double-imprinted polymer capable of magnetically separating in underground medium comprises highly dispersed graphene oxide as the carrier of iron tetroxide, arsenic (III) and antimony (III) as template ions, methyl methacrylate (MMA) as functional monomer, ethylene glycol dimethylacrylate (EGDMA) as cross-linking agent, and azobisisobutyronitrile (AIBN) used as an initiator, which is prepared by surface imprinting, where the particle size ranges from 10-20 nm. USE - Used as graphene oxide surface arsenic-antimony double-imprinted polymer capable of magnetically separating in underground medium. ADVANTAGE - The polymer has a specific recognition effect on arsenic and antimony pollution in groundwater, and efficiently improves the adsorption performance of iron-based adsorption materials for arsenic and antimony. The magnetic properties are beneficial to the directional migration and recovery of polymer materials in groundwater, and are suitable for in-situ remediation of arsenic and antimony pollution in groundwater. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene oxide surface arsenic-antimony double-imprinted polymer capable of magnetically separating in underground medium comprising (A) ultrasonically dispersing 0.3-0.86 g graphene oxide into the ultrapure water of 0.45 l to obtain stable graphene oxide suspension, (B) dissolving 2.916 g ferric chloride and 2.502 g ferrous sulfate in 50ml of deionized water, slowly pouring into the graphene oxide suspension and stirring at room temperature, (C) heating the solution to 60degrees Celsius, using the in-situ precipitation method to slowly drop aqueous ammonia into the solution under anaerobic conditions, where the pH in the solution is greater than 10, and then continuously heating to 90degrees Celsius and continuously stirring for 4 hours, (D) adopting magnet to collect the product in the obtained solution, washing 3 times with ethanol and ultrapure water repeatedly respectively, then drying the product after washing with vacuum drying oven 60degrees Celsius to obtain iron oxide/graphene oxide(MGO) material, (E) 2mmol arsenic (III) and antimony (III) template ion are dissolved in 50ml ultrapure water, adding the methyl methacrylate of 18mmol and stirring 6 hours to carry out prepolymerization, (F) adding 0.2 g iron oxide/graphene oxide and 80mmol ethylene glycol dimethylacrylatein the mixed solution, heating to 60degrees Celsius, then adding 0.1 g azobisisobutyronitrile and stirring for 24 hours, (G) repeatedly washing the obtained cross-linked product F with absolute ethanol and deionized water for 4-5 times, eluting the template ions with 0.5M sodium hydroxide solution until the template ions could not be detected in the supernatant, repeatedly washing the material with deionized water until the supernatant is neutral, and drying the washed material in a vacuum drying oven at 60degrees Celsius to obtain the imprinted material.