Mo0协同Fe3+活化过氧乙酸降解水中罗丹明B研究OA
Study on the degradation of rhodamine B in wastewater by activation of peracetic acid with Mo0 and Fe3+
近年来,通过活化过氧乙酸(peracetic acid,PAA)产生活化氧物种降解有机污染物的高级氧化工艺引起了较大的关注.本研究验证了活化 PAA 在水中降解罗丹明 B(rhodamine B,RhB)的有效性.该体系以 Fe3+为均相催化剂,以 Mo0 为多相催化剂,以 PAA 为氧化剂,考察对 RhB 的降解情况,并对一些重要的反应参数进行优化,包括催化剂的种类、初始 pH 值、Mo0 投加量、Fe3+和 PAA 浓度等.研究结果表明,Mo0 协同 Fe3+活化 PAA 可以有效地降解水中的 RhB.在初始 pH=5.87、Mo0 质量浓度为0.5 g/L、Fe3+浓度为0.1 mmol/L 以及 PAA 浓度为0.5 mmol/L 时,RhB 的降解效果最佳;反应体系中 Cl-和 NO-3 对 RhB 的降解效果影响不大,而 HCO-3 和H2 PO-4 对 RhB 的降解具有明显的抑制作用.此外,Mo0 表现出良好的稳定性.捕获剂研究结果表明,该体系同时存在自由基和非自由基物种.
The advanced oxidation processes utilizing the activation of peracetic acid(PAA)to generate reactive oxygen species for the degradation of organic pollutants has been exten-sively studied in the past few years.This study verified the effectiveness of PAA activation for degrading Rhodamine B(RhB)in wastewater.The system used Fe3+and Mo0 as homo-geneous and heterogeneous catalysts,respectively,while PAA acted as an oxidant.It ex-amined the RhB removal under various conditions,optimizing several key parameters,e.g.,types of catalysts,initial pH,the dosage of Mo0,and concentrations of Fe3+and PAA.The results indicated that Mo0 synergistically combined with Fe3+could effectively degrade RhB.The optimal conditions were found to be 5.87 of initial pH,0.5 g/L of Mo0,0.1 mmol/Lof Fe3+,and 0.5 mmol/L of PAA.The presence of Cl-and NO-3 in the reaction system had little effect on the RhB removal,whereas HCO-3 and H2 PO-4 signifi-cantly inhibited the degradation process.Besides,the Mo0 showed a good stability.Quenching experiments demonstrated that both free radicals and non-radical reactive species were generated in the reaction system.
罗才武;吕静;张贻良;蒋亮
南华大学 资源环境与安全工程学院,湖南 衡阳 421001南华大学 资源环境与安全工程学院,湖南 衡阳 421001湖南核工业宏华机械有限公司,湖南 衡阳 421000南华大学 资源环境与安全工程学院,湖南 衡阳 421001
化学化工
过氧乙酸催化剂Mo0Fe3+罗丹明B
peracetic acidcatalystMo0Fe3+RhB(rhodamine B)
《南华大学学报（自然科学版）》 2026 (1)
9-15,80,8
湖南省自然科学基金项目(2025JJ700164)湖南省教育厅重点项目(2024A0315)
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