▎ 摘　　要

NOVELTY - Preparing nano-magnetic graphene oxide-polyaniline composite material involves taking 100 mg magnetic graphene oxide, adding 2-3 g aniline and 10-15 ml of 2 M hydrochloric acid, stirring ultrasonically for 30 minutes, controlling mixing temperature to 0℃, adding dropwise 18-22 ml ammonium persulfate solution with a concentration of 2M under mechanical stirring, controlling dropping rate at 3 seconds/drop, standing for reaction for 1 hour after the dropwise addition is completed, where the temperature during the dropwise addition and reaction process is 0℃, standing for reaction, performing suction filtration, washing the obtained solid product with deionized water and ethanol in order, and drying at a constant temperature of 40℃ to obtain a nano-magnetic graphene oxide-polyaniline composite material. USE - Method for preparing nano-magnetic graphene oxide-polyaniline composite material used to adsorption and purification of heavy metal ions and organic dyes (claimed). ADVANTAGE - The prepared composite material has magnetism, recycled, and cost-effective.