▎ 摘　　要

NOVELTY - Method for preparing three-dimensional graphene-based nano-zerovalent iron material, involves (i) preparing a three-dimensional graphene aerogel, and (ii) loading nano-zerovalent iron by (iia) mixing the three-dimensional graphene aerogel with a divalent iron or a trivalent iron solution under nitrogen condition to obtain a mixed solution (A), where the mass ratio of the three-dimensional graphene and iron is 1:1-1:10, (iib) adding sodium borohydride to the mixed solution (A), reacting for 20-40 minutes, and performing suction filtration to obtain product (B), where the molar ratio of iron and sodium borohydride is 1:1-1:10 and (iic) washing the product (B) with anhydrous ethanol and freeze-drying for 12-36 hours. USE - The method is useful for preparing three-dimensional graphene-based nano-zerovalent iron material used in advanced oxidation technology for catalyzing persulfate oxidation to degrade organophosphorus pollutants (all claimed). ADVANTAGE - The method has mild reactions than the one-step hydrothermal synthesis method. The three-dimensional graphene-based nano-zerovalent iron material has controllable morphology, high iron load, no secondary pollution and strong operability, and is easy to recover after use. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the use of the three-dimensional graphene-based nano-zerovalent iron material in advanced oxidation technology.