▎ 摘　　要

NOVELTY - Use of graphene-covalently-grafted aminobenzene tripyridine-iron complex in Fenton system for decomposing organic pollutants, involves adding the complex to water containing organic pollutants, adjusting the pH to 3-6, adding hydrogen peroxide, and carrying out oscillation reaction at 25-40 degrees C. USE - Use of graphene-covalently-grafted aminobenzene tripyridine-iron complex in Fenton system for decomposing organic pollutants. ADVANTAGE - The complex comprises iron ions firmly supported on the surface of graphene. Iron loss and secondary pollution are prevented. The higher electron transfer efficiency and larger specific surface area of graphene exert higher degradation ability of organic pollutants with Fenton reagent. The complex provides a decomposition rate close to 100% with respect to 100 mg/L rhodamine B in 60 minutes, which is not reduced even after 5 cycles. The complex has excellent stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the complex, which involves dispersing graphene oxide in dichloromethane, ultrasonically dispersing for 0.5-1 hour, dripping thionyl chloride in an amount 5-10 times that of graphene oxide under ultrasonic conditions, introducing argon gas for protection, heating and refluxing at 40-60 degrees C for 12-20 hours, preferably at 50-60 degrees C for 18-20 hours, rotary-evaporating to remove the redundant reactant and solvent and obtain acyl chloride graphene oxide, dissolving ferrous sulfate in 50-200 ml water, stirring and dissolving, adding aminobenzene tripyridyl ligand such that the molar ratio of ferrous sulfate and ligand is 1:1, magnetically stirring for 1-3 hours to obtain a homogeneous mixture, transferring the mixture to a PTFE-lined stainless steel reactor, heating at 120-140 degrees C for 24-48 hours, cooling naturally to room temperature, filtering, washing to obtain an aminobenzene tripyridine-iron complex, dissolving the complex in methylene dichloride, adding the acyl chloride graphene oxide such that the mass ratio of complex and graphene oxide is 1:0.3-3, dripping little dimethylformamide as catalyst, reacting for 20-48 hours at 80-120 degrees C, preferably for 40-48 hours at 100-120 degrees C, centrifuging, and separating.