▎ 摘　　要

NOVELTY - Preparing magnetic nanocomposite involves dissolving graphene/polyaniline having a mass ratio of 1-3:1-5:5-10, ferric chloride and sodium acetate in the solvent and ultrasonicated by using an alcohol having 1-5 carbon atoms as a solvent. The reaction is carried out in an autoclave to obtain a magnetic graphene polyaniline nanocomposite. The ultrasonic treatment power is 300-500 watt, and time is 0.5-1.5 hours. The reaction temperature in the autoclave is 180-200 degrees C, and reaction time is 4-10 hours. The method further involves mixing the graphite oxide and solvent and then sonicating to obtain a graphene oxide solution. The aniline-containing hydrochloric acid solution is mixed to graphene oxide solution and stirring uniformly to obtain mixed solution. A hydrochloric acid solution containing ammonium persulfate is added to the mixed solution to carry out a reaction, and after completion of reaction washing and drying are carried out to obtain a graphene/polyaniline composite material. USE - Method for preparing magnetic nanocomposite. ADVANTAGE - The method enables to prepare magnetic nanocomposite, which improves the adsorption efficiency of phenolic estrogen, easy to separate, and high adsorption efficiency and simple operation.