{"title":"MgCoFe-LDO 催化剂通过活化过硫酸盐产生的活性氧高效降解磺胺甲噁唑","authors":"Kefeng Shang, Xi Feng, Yongxin Wang","doi":"10.1007/s10562-024-04827-3","DOIUrl":null,"url":null,"abstract":"<div><p>MgCoFe layered double oxides (MgCoFe-LDO) were fabricated to activate peroxymonosulfate (PMS) for degradation of sulfamethoxazole (SMX), and the highly efficient degradation of SMX revealed an excellent catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO for PMS under different pH values and water matrix. Scanning electron microscope analysis indicated the catalyst has a typical “flower-like” structure, and the X-ray powder diffraction analyses proved that the main crystal phase of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO is CoFe<sub>2</sub>O<sub>4</sub> and Mg<sub>1−x</sub>Fe<sub>x</sub>O, which is responsible for the good catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO. The radical scavenging experiments confirmed that <sup>1</sup>O<sub>2</sub>, <span>\\({\\text{SO}}_{4}^{\\cdot - }\\)</span>, OH and <span>\\({\\text{O}}_{2}^{\\cdot - }\\)</span> were involved in the degradation of SMX, but <sup>1</sup>O<sub>2</sub> and <span>\\({\\text{SO}}_{4}^{\\cdot - }\\)</span> played the dominant roles. According to the X-ray photoelectron spectroscopy (XPS) of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO catalyst, it was referred that the species including CoOH<sup>+</sup>, CoO<sup>+</sup>, Fe<sup>3+</sup>, FeOH<sup>2+</sup>, Fe<sup>2+</sup>, etc. involve in the activation process of PMS. Moreover, the possible degradation pathways of SMX were proposed according to the detected intermediates including N-hydroxy sulfamethoxazole, 3-amino-5-methylisoxazole from LC–MS analysis, and the toxicity analysis via Toxicity Estimation Software Tool software shows that most of the degradation products of SMX have lower toxicity than SMX.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient Degradation of Sulfamethoxazole via Reactive Oxygen Species Produced from Activated Peroxymonosulfate by MgCoFe-LDO Catalyst\",\"authors\":\"Kefeng Shang, Xi Feng, Yongxin Wang\",\"doi\":\"10.1007/s10562-024-04827-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>MgCoFe layered double oxides (MgCoFe-LDO) were fabricated to activate peroxymonosulfate (PMS) for degradation of sulfamethoxazole (SMX), and the highly efficient degradation of SMX revealed an excellent catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO for PMS under different pH values and water matrix. Scanning electron microscope analysis indicated the catalyst has a typical “flower-like” structure, and the X-ray powder diffraction analyses proved that the main crystal phase of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO is CoFe<sub>2</sub>O<sub>4</sub> and Mg<sub>1−x</sub>Fe<sub>x</sub>O, which is responsible for the good catalytic activity of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO. The radical scavenging experiments confirmed that <sup>1</sup>O<sub>2</sub>, <span>\\\\({\\\\text{SO}}_{4}^{\\\\cdot - }\\\\)</span>, OH and <span>\\\\({\\\\text{O}}_{2}^{\\\\cdot - }\\\\)</span> were involved in the degradation of SMX, but <sup>1</sup>O<sub>2</sub> and <span>\\\\({\\\\text{SO}}_{4}^{\\\\cdot - }\\\\)</span> played the dominant roles. According to the X-ray photoelectron spectroscopy (XPS) of Mg<sub>2</sub>Co<sub>1</sub>Fe<sub>1</sub>-LDO catalyst, it was referred that the species including CoOH<sup>+</sup>, CoO<sup>+</sup>, Fe<sup>3+</sup>, FeOH<sup>2+</sup>, Fe<sup>2+</sup>, etc. involve in the activation process of PMS. Moreover, the possible degradation pathways of SMX were proposed according to the detected intermediates including N-hydroxy sulfamethoxazole, 3-amino-5-methylisoxazole from LC–MS analysis, and the toxicity analysis via Toxicity Estimation Software Tool software shows that most of the degradation products of SMX have lower toxicity than SMX.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-024-04827-3\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04827-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Efficient Degradation of Sulfamethoxazole via Reactive Oxygen Species Produced from Activated Peroxymonosulfate by MgCoFe-LDO Catalyst
MgCoFe layered double oxides (MgCoFe-LDO) were fabricated to activate peroxymonosulfate (PMS) for degradation of sulfamethoxazole (SMX), and the highly efficient degradation of SMX revealed an excellent catalytic activity of Mg2Co1Fe1-LDO for PMS under different pH values and water matrix. Scanning electron microscope analysis indicated the catalyst has a typical “flower-like” structure, and the X-ray powder diffraction analyses proved that the main crystal phase of Mg2Co1Fe1-LDO is CoFe2O4 and Mg1−xFexO, which is responsible for the good catalytic activity of Mg2Co1Fe1-LDO. The radical scavenging experiments confirmed that 1O2, \({\text{SO}}_{4}^{\cdot - }\), OH and \({\text{O}}_{2}^{\cdot - }\) were involved in the degradation of SMX, but 1O2 and \({\text{SO}}_{4}^{\cdot - }\) played the dominant roles. According to the X-ray photoelectron spectroscopy (XPS) of Mg2Co1Fe1-LDO catalyst, it was referred that the species including CoOH+, CoO+, Fe3+, FeOH2+, Fe2+, etc. involve in the activation process of PMS. Moreover, the possible degradation pathways of SMX were proposed according to the detected intermediates including N-hydroxy sulfamethoxazole, 3-amino-5-methylisoxazole from LC–MS analysis, and the toxicity analysis via Toxicity Estimation Software Tool software shows that most of the degradation products of SMX have lower toxicity than SMX.
期刊介绍:
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.