▎ 摘　　要

NOVELTY - Preparation of composite material involves adding pore-forming agent to deionized water, mixing for 3-10 minutes, obtaining organic solution, adding alkali aqueous solution of inorganic iron source, stirring for 5-10 minutes, obtaining transparent mixture, adding graphene oxide, ultrasonically processing for 0.3-2 hours, stirring for 2-4 hours, obtaining stable suspension, adding to hydrothermal reactor, reacting at 100-200 degrees C for 5-24 hours, cooling to room temperature, centrifuging, washing using deionized water and drying at 50 degrees C for 12 hours. USE - Preparation of composite material (claimed). ADVANTAGE - The method enables preparation of non-toxic composite material with high yield, by simple and economical process. DETAILED DESCRIPTION - Preparation of composite material involves adding pore-forming agent to deionized water, mixing for 3-10 minutes, obtaining organic solution, adding alkali aqueous solution of inorganic iron source, stirring for 5-10 minutes, obtaining transparent mixture, adding graphene oxide, ultrasonically processing for 0.3-2 hours, stirring for 2-4 hours, obtaining stable suspension, adding to hydrothermal reactor, reacting at 100-200 degrees C for 5-24 hours, cooling to room temperature, centrifuging, washing using deionized water and drying at 50 degrees C for 12 hours. The mass ratio of pore-forming agent and deionized water is 1:1.03-3. The mass ratio of alkali source and pore-forming agent is 1:33.3-96.7. The concentration of aqueous solution of inorganic iron is 0.05-0.5 mol/L. The mass ratio of pore-forming agent and inorganic iron source is 1:2-5.8. The mass ratio of graphene oxide and pore-forming agent is 1:285.7-828.6.