【摘要】 构建了高锰酸钾（KMnO₄）与过硫酸钠（Na₂S₂O₈）组合氧化剂的高级氧化体系，并探究其对水中2-氯酚（2-chlorophenol，2-CP）的降解性能。结果表明，该组合氧化剂对2-CP的降解效率优于单一氧化剂，具有显著的协同作用；通过优化参数，确定Na₂S₂O₈在KMnO₄反应1h后投加效果最佳，Na₂S₂O₈氧化时长及KMnO₄/Na₂S₂O₈的浓度比值对降解效果均有重要影响。KMnO₄先行氧化后生成的Mn（Ⅳ）与Mn（Ⅱ）能够有效活化Na₂S₂O₈，产生高活性氧物种进一步氧化2-CP。研究结果可为水体和土壤中氯酚类难降解有机污染物的高效降解提供新的技术途径。更多还原

【Abstract】 An advanced oxidation system combining potassium permanganate （KMnO₄） and sodium persulfate （Na₂S₂O₈） was developed for the degradation of 2-chlorophenol （2-CP） in water.The results demonstrated that the combined oxidants exhibited superior degradation efficiency compared to individual oxidants,with a significant synergistic effect.Parameter optimization revealed that the best performance was achieved when Na₂S₂O₈ was added 1 hour after KMnO₄ initiation,while the oxidation duration of Na₂S₂O₈ and the concentration ratio of KMnO₄/Na₂S₂O₈ criticallyinfluenced the degradation efficacy.Mn（IV） and Mn（II） species generated during the initial KMnO₄ oxidation phase could effectively activateNa₂S₂O₈,producing highly reactive oxygen species that further oxidized 2-CP.This work provides a novel technical approach for the efficient degradation of refractory chlorophenolic pollutants in water and soil environments.更多还原