▎ 摘　　要

NOVELTY - Preparation of three-dimensional porous composite adsorbent material involves dispersing graphene oxide in deionized water for 15-20 minutes to obtain graphene oxide solution, mixing ferrous sulfate tetrahydrate and ferric chloride hexahydrate, ultrasonically processing for 20 minutes, adding sodium hydroxide solution, adjusting pH value to 10, drying at 90 degrees C to obtain iron-graphene oxide product, mixing triethyl orthoacetate and p-toluenesulfonic acid, reacting at 130 degrees C for 36-48 hours, adding sodium hydroxide solution, stirring for 4 hours and then cooling, drying to obtain iron-graphene oxide-ester product, dispersing iron-graphene oxide-ester product in 1,4-dioxane, adding N,N-dimethylformamide, ultrasonically processing for 20 minutes, adding oxalyl chloride, dispersing solid component in dichloromethane, stirring for 10 minutes, dispersing in 1,4-dioxane, adding polyamine compound, ultrasonically processing for 6 hours, centrifuging and drying for 24 hours. USE - The method is useful for preparation of three-dimensional porous composite adsorbent material (claimed). ADVANTAGE - The method enables easy and rapid preparation of three-dimensional porous composite adsorbent material with high selectivity and specific surface area and excellent adsorption property and magnetic property in convenient manner. DETAILED DESCRIPTION - Preparation of three-dimensional porous composite adsorbent material involves dispersing graphene oxide in 40-60 ml deionized water for 15-20 minutes to obtain 0.3-0.6 mg/ml graphene oxide solution, mixing 5-7 mg/ml ferrous sulfate tetrahydrate and 10-12 mg/ml ferric chloride hexahydrate, ultrasonically processing for 20 minutes, heating at 40-50 degrees C, adding sodium hydroxide solution, adjusting pH value to 10, heating at 80-90 degrees C for 30-60 minutes, cooling to room temperature, washing with deionized water, drying at 90 degrees C to obtain iron-graphene oxide product, mixing 0.4-0.6 ml/mg triethyl orthoacetate and 0.02-0.04 mg/mg p-toluenesulfonic acid, reacting at 130 degrees C for 36-48 hours, adding 1 mol/l or 0.4-0.6 ml/mg sodium hydroxide solution, stirring for 4 hours and then cooling, centrifuging, washing with deionized water and acetone, drying at room temperature under vacuum to obtain iron-graphene oxide-ester product, dispersing 5-8 mg/ml iron-graphene oxide-ester product in 1,4-dioxane, adding N,N-dimethylformamide, ultrasonically processing for 20 minutes, adding 3 ml/mg oxalyl chloride, centrifuging, dispersing solid component in 2 mg/ml dichloromethane, stirring for 10 minutes, dispersing in 2-4 mg/ml 1,4-dioxane, processing for 20-30 minutes, adding polyamine compound, ultrasonically processing for 6 hours, centrifuging, dispersing in 5-10 mg/ml 1,4-dioxane, ultrasonically processing for 10 minutes, washing with deionized water and acetone, separating solid component, dispersing in 5-10 mg/ml deionized water, drying for 24 hours and separating solid component. The ratio of iron-graphene oxide-ester product and polyamine compound is 1:10.