合成了一种新型的氮化碳负载Fe₃O₄、NiO磁性材料NiO/Fe₃O₄@g-C₃N₄，催化活化过二硫酸钠（PDS）产生非自由基氧化苯并（a）芘（BaP）。在材料质量浓度为0.5 g/L、PDS浓度为2 mmol/L、常温下反应60 min，对5 mg/L BaP的去除率达87.07%。此外，通过对非自由基途径进行深入研究发现，反应过程中存在单线态氧（¹O₂）且直接参与污染物的氧化。该磁性材料可通过强磁铁回收重复利用，在连续5次反应后去除效率仍有67.78%。

NiO/Fe₃O₄@g-C₃N₄, a new magnetic material, is synthesized by loading Fe₃O₄ and NiO on g-C₃N₄, and used to catalytically activate sodium persulfate to generate a nonradical pathway to oxidate benzo (a) pyrene (BaP).The removal rate of BaP can reach 87.07% when the concentration of NiO/Fe₃O₄@g-C₃N₄ is 0.5 g·L^-1, the concentration of sodium persulfate is 2 mM and the reaction has performed for 60 min at room temperature.In addition, the existence of singlet oxygen (¹O₂) in the reaction process and its direct participation in the oxidation of pollutants are proved through in-depth study on the nonradical pathway.This magnetic material can be recycled by strong magnet, and the removal efficiency of BaP can still reach 67.78% after the material has been used for five consecutive reactions.

费家通(1996-),男,硕士研究生,研究方向为土壤和地下水中多环芳烃的去除,fjt313386692@163.com。