Qiaojuan Kong , Yuansheng Wang , Jiaqu Tan , Siyu Long , Jiayi Li , Zhongqiu Zhao , Yulong Zhang , Yongtao Li , Xueming Lin
{"title":"磁性Fe3S4纳米颗粒水凝胶复合材料通过过硫酸盐活化有效降解农药:揭示电子转移机制的关键作用","authors":"Qiaojuan Kong , Yuansheng Wang , Jiaqu Tan , Siyu Long , Jiayi Li , Zhongqiu Zhao , Yulong Zhang , Yongtao Li , Xueming Lin","doi":"10.1016/j.apcata.2025.120255","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a magnetic Fe<sub>3</sub>S<sub>4</sub> lignin hydrogel (FSLH) catalyst was synthesized to activate peroxydisulfate (PDS) for the degradation of isoproturon (IPU). The composite material not only exhibited high efficiency in degrading IPU but also effectively decomposed various neonicotinoid insecticides. Experimental results indicated that the FSLH/PDS system degraded IPU via an electron transfer pathway (ETP), wherein the <img>Fe(Ⅲ)−OS<sub>2</sub>O<sub>7</sub><sup>−</sup> complex, formed by FSLH and PDS, captured electrons from IPU, facilitating efficient degradation and generating Fe(IV). All reactive oxygen species (ROS), including SO<sub>4</sub>•<sup>−</sup>, •OH, <sup>1</sup>O<sub>2</sub>, and O<sub>2</sub><sup>•−</sup>, as well as Fe(IV), contributed to IPU degradation, with ETP playing a dominant role. In real water matrices, increasing the [FSLH/PDS] dosage significantly enhanced IPU degradation efficiency, and the FSLH/PDS system remained highly effective in the presence of various inorganic anions and humic acid. Ultimately, IPU was oxidized into low-toxicity products, substantially reducing ecological risks. This study elucidates the non-radical reaction mechanism, providing a theoretical basis for the application of hydrogel composite nanocatalysts in pesticide wastewater treatment.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"699 ","pages":"Article 120255"},"PeriodicalIF":4.7000,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient pesticide degradation through peroxydisulfate activation by magnetic Fe3S4 nanoparticle hydrogel composites: Unveiling the pivotal role of electron transfer mechanisms\",\"authors\":\"Qiaojuan Kong , Yuansheng Wang , Jiaqu Tan , Siyu Long , Jiayi Li , Zhongqiu Zhao , Yulong Zhang , Yongtao Li , Xueming Lin\",\"doi\":\"10.1016/j.apcata.2025.120255\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, a magnetic Fe<sub>3</sub>S<sub>4</sub> lignin hydrogel (FSLH) catalyst was synthesized to activate peroxydisulfate (PDS) for the degradation of isoproturon (IPU). The composite material not only exhibited high efficiency in degrading IPU but also effectively decomposed various neonicotinoid insecticides. Experimental results indicated that the FSLH/PDS system degraded IPU via an electron transfer pathway (ETP), wherein the <img>Fe(Ⅲ)−OS<sub>2</sub>O<sub>7</sub><sup>−</sup> complex, formed by FSLH and PDS, captured electrons from IPU, facilitating efficient degradation and generating Fe(IV). All reactive oxygen species (ROS), including SO<sub>4</sub>•<sup>−</sup>, •OH, <sup>1</sup>O<sub>2</sub>, and O<sub>2</sub><sup>•−</sup>, as well as Fe(IV), contributed to IPU degradation, with ETP playing a dominant role. In real water matrices, increasing the [FSLH/PDS] dosage significantly enhanced IPU degradation efficiency, and the FSLH/PDS system remained highly effective in the presence of various inorganic anions and humic acid. Ultimately, IPU was oxidized into low-toxicity products, substantially reducing ecological risks. This study elucidates the non-radical reaction mechanism, providing a theoretical basis for the application of hydrogel composite nanocatalysts in pesticide wastewater treatment.</div></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":\"699 \",\"pages\":\"Article 120255\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2025-04-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X25001565\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X25001565","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Efficient pesticide degradation through peroxydisulfate activation by magnetic Fe3S4 nanoparticle hydrogel composites: Unveiling the pivotal role of electron transfer mechanisms
In this study, a magnetic Fe3S4 lignin hydrogel (FSLH) catalyst was synthesized to activate peroxydisulfate (PDS) for the degradation of isoproturon (IPU). The composite material not only exhibited high efficiency in degrading IPU but also effectively decomposed various neonicotinoid insecticides. Experimental results indicated that the FSLH/PDS system degraded IPU via an electron transfer pathway (ETP), wherein the Fe(Ⅲ)−OS2O7− complex, formed by FSLH and PDS, captured electrons from IPU, facilitating efficient degradation and generating Fe(IV). All reactive oxygen species (ROS), including SO4•−, •OH, 1O2, and O2•−, as well as Fe(IV), contributed to IPU degradation, with ETP playing a dominant role. In real water matrices, increasing the [FSLH/PDS] dosage significantly enhanced IPU degradation efficiency, and the FSLH/PDS system remained highly effective in the presence of various inorganic anions and humic acid. Ultimately, IPU was oxidized into low-toxicity products, substantially reducing ecological risks. This study elucidates the non-radical reaction mechanism, providing a theoretical basis for the application of hydrogel composite nanocatalysts in pesticide wastewater treatment.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.