▎ 摘　　要

NOVELTY - Preparing heavy metal adsorption material involves adding graphene, polyacrylic acid to ethanediol and performing ultrasound to disperse uniformly. Ferric chloride hexahydrate, zinc chloride, anhydrous NaAc are dissolved in the solution under ultrasonic condition and sufficient mix to form uniform dispersion. Hydrothermal reaction is performed at 195-205 degrees C. Magnetic separation, washing and drying are performed and the obtained product is zinc iron oxide/reduced graphene oxide-polyacrylic acid dispersed in dimethyl sulfoxide, forming a magnetic fluid. USE - Method for preparing magnetic graphite-based heavy metal adsorption material (claimed). ADVANTAGE - The method enables to prepare magnetic graphite-based heavy metal adsorption material providing choice of low toxic raw materials, good biocompatibility, no secondary pollution. Polyacrylic acid and polyacrylamide are added in controlled proportions giving efficient and environment friendly magnetic graphite-based heavy metal adsorption material having good dispersion of lead with good absorbing effect which can be recycled. DETAILED DESCRIPTION - Preparing heavy metal adsorption material involves adding graphene, polyacrylic acid to ethanediol and performing ultrasound to disperse uniformly. Ferric chloride hexahydrate, zinc chloride, anhydrous NaAc are dissolved in the solution under ultrasonic condition and sufficient mix to form uniform dispersion. Hydrothermal reaction is performed at 195-205 degrees C. Magnetic separation, washing and drying are performed and the obtained product is zinc iron oxide/reduced graphene oxide-polyacrylic acid dispersed in dimethyl sulfoxide, forming a magnetic fluid. N,N'-dicyclohexylcarbodiimide, polyacrylamide solution are added to magnetic fluid and after ultrasonic dispersion, the reaction mixture is stirred at room temperature. Magnetic separation is performed after completion of the reaction and washing is performed with ethanol and deionized water mixed solution followed by drying to prepare the adsorbent material.