Nan Li , Tongcai Liu , Shaoze Xiao , Wenjun Yin , Longlong Zhang , Jiabin Chen , Yayi Wang , Xuefei Zhou , Yalei Zhang
{"title":"硫代硫酸盐增强中性条件下Cu(II)催化的类fenton反应:硫化在铜循环和Cu(III)生成中的关键作用","authors":"Nan Li , Tongcai Liu , Shaoze Xiao , Wenjun Yin , Longlong Zhang , Jiabin Chen , Yayi Wang , Xuefei Zhou , Yalei Zhang","doi":"10.1016/j.jhazmat.2022.130536","DOIUrl":null,"url":null,"abstract":"<div><p><span>Thiosulfate (S</span><sub>2</sub>O<sub>3</sub><sup>2-</sup><span>) has been proven to be an effective promoter of Fenton-like reactions by accelerating the metal ions cycle. However, up to now, little is known about the role of sulfur transformation and intermediate sulfur in the regulation of metal chemical cycle and reactive species production. Herein, free Cu(II) was selected as catalyst for the activation of H</span><sub>2</sub>O<sub>2</sub>. The introduction of S<sub>2</sub>O<sub>3</sub><sup>2-</sup><span> significantly enhanced the degradation of benzoic acid, and the degradation rate (</span><em>k</em><sub>obs</sub>) was 5.8 times that of Cu(II)/H<sub>2</sub>O<sub>2</sub> system. The kinetic model revealed the transformation of sulfur species and demonstrated that sulfides (i.e., HS<sup>-</sup>/S<sup>2-</sup>, S<sub>2</sub>O<sub>3</sub><sup>2-</sup>) and S<sup>0</sup> were the dominant electron donor for the reduction of Cu(II) into Cu(I). Consequently, the reduction and complexation roles of S<sub>2</sub>O<sub>3</sub><sup>2-</sup> significantly resolve the rate-limiting step and broaden the pH range of in Fenton-like reactions. Evidence for the critical role of high-valent copper (Cu(III)) and HO<sup>•</sup> on BA degradation was obtained by scavengers experiments, electron paramagnetic resonance and fluorescent probes. Meanwhile, the Cu(II)/H<sub>2</sub>O<sub>2</sub>/S<sub>2</sub>O<sub>3</sub><sup>2-</sup><span> system also exhibited satisfactory anti-interference ability of the various matrix. Overall, this study offers mechanistic insight into sulfidation in Cu chemical cycle and Cu(III) generation, and highlights the potential of S</span><sub>2</sub>O<sub>3</sub><sup>2-</sup> for Fenton-like reactions to control pollutants.</p></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":null,"pages":null},"PeriodicalIF":12.2000,"publicationDate":"2023-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thiosulfate enhanced Cu(II)-catalyzed Fenton-like reaction at neutral condition: Critical role of sulfidation in copper cycle and Cu(III) production\",\"authors\":\"Nan Li , Tongcai Liu , Shaoze Xiao , Wenjun Yin , Longlong Zhang , Jiabin Chen , Yayi Wang , Xuefei Zhou , Yalei Zhang\",\"doi\":\"10.1016/j.jhazmat.2022.130536\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Thiosulfate (S</span><sub>2</sub>O<sub>3</sub><sup>2-</sup><span>) has been proven to be an effective promoter of Fenton-like reactions by accelerating the metal ions cycle. However, up to now, little is known about the role of sulfur transformation and intermediate sulfur in the regulation of metal chemical cycle and reactive species production. Herein, free Cu(II) was selected as catalyst for the activation of H</span><sub>2</sub>O<sub>2</sub>. The introduction of S<sub>2</sub>O<sub>3</sub><sup>2-</sup><span> significantly enhanced the degradation of benzoic acid, and the degradation rate (</span><em>k</em><sub>obs</sub>) was 5.8 times that of Cu(II)/H<sub>2</sub>O<sub>2</sub> system. The kinetic model revealed the transformation of sulfur species and demonstrated that sulfides (i.e., HS<sup>-</sup>/S<sup>2-</sup>, S<sub>2</sub>O<sub>3</sub><sup>2-</sup>) and S<sup>0</sup> were the dominant electron donor for the reduction of Cu(II) into Cu(I). Consequently, the reduction and complexation roles of S<sub>2</sub>O<sub>3</sub><sup>2-</sup> significantly resolve the rate-limiting step and broaden the pH range of in Fenton-like reactions. Evidence for the critical role of high-valent copper (Cu(III)) and HO<sup>•</sup> on BA degradation was obtained by scavengers experiments, electron paramagnetic resonance and fluorescent probes. Meanwhile, the Cu(II)/H<sub>2</sub>O<sub>2</sub>/S<sub>2</sub>O<sub>3</sub><sup>2-</sup><span> system also exhibited satisfactory anti-interference ability of the various matrix. Overall, this study offers mechanistic insight into sulfidation in Cu chemical cycle and Cu(III) generation, and highlights the potential of S</span><sub>2</sub>O<sub>3</sub><sup>2-</sup> for Fenton-like reactions to control pollutants.</p></div>\",\"PeriodicalId\":361,\"journal\":{\"name\":\"Journal of Hazardous Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":12.2000,\"publicationDate\":\"2023-03-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Hazardous Materials\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304389422023305\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hazardous Materials","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304389422023305","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Thiosulfate enhanced Cu(II)-catalyzed Fenton-like reaction at neutral condition: Critical role of sulfidation in copper cycle and Cu(III) production
Thiosulfate (S2O32-) has been proven to be an effective promoter of Fenton-like reactions by accelerating the metal ions cycle. However, up to now, little is known about the role of sulfur transformation and intermediate sulfur in the regulation of metal chemical cycle and reactive species production. Herein, free Cu(II) was selected as catalyst for the activation of H2O2. The introduction of S2O32- significantly enhanced the degradation of benzoic acid, and the degradation rate (kobs) was 5.8 times that of Cu(II)/H2O2 system. The kinetic model revealed the transformation of sulfur species and demonstrated that sulfides (i.e., HS-/S2-, S2O32-) and S0 were the dominant electron donor for the reduction of Cu(II) into Cu(I). Consequently, the reduction and complexation roles of S2O32- significantly resolve the rate-limiting step and broaden the pH range of in Fenton-like reactions. Evidence for the critical role of high-valent copper (Cu(III)) and HO• on BA degradation was obtained by scavengers experiments, electron paramagnetic resonance and fluorescent probes. Meanwhile, the Cu(II)/H2O2/S2O32- system also exhibited satisfactory anti-interference ability of the various matrix. Overall, this study offers mechanistic insight into sulfidation in Cu chemical cycle and Cu(III) generation, and highlights the potential of S2O32- for Fenton-like reactions to control pollutants.
期刊介绍:
The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.