{"title":"MIL-53(Fe)/CoWO4 复合材料和 PMS 在可见光下协同光催化降解 TC-HCl","authors":"Qian Liu , Panpan Xu , Qianqian Zhang, Guangming Han, Ling Li, Limin Zhou","doi":"10.1016/j.chemphys.2024.112479","DOIUrl":null,"url":null,"abstract":"<div><div>A series of novel MIL-53(Fe)/CoWO<sub>4</sub> composites were synthesized by combining MIL-53(Fe) and CoWO<sub>4</sub> nanoparticles via solvothermal method. The structural characterizations showed that CoWO<sub>4</sub> nanoparticles were uniformly distributed on the surface of hexagonal bipyramid MIL-53(Fe). Combining XPS and Mott-Schottky plots, a Z-scheme heterojunction was formed between MIL-53(Fe) and CoWO<sub>4</sub>, resulting in a significant improvement in the electron-hole pair separation efficiency. UV–vis diffused reflectance spectra indicated that the optical arrange of MIL-53(Fe)/CoWO<sub>4</sub> composites were expanded to visible light. The photocatalytic degradation experiments under visible light irradiation showed that MIL/CWO-60 synergistically with PMS degraded 90.5 % of TC-HCl within 50 min. The XRD spectra of used and unused composites were identical, indicating good stability in four consecutive cycles. Electron paramagnetic resonance (EPR) and free radicals trapping experiment revealed that active species included <img>O<sup>2−</sup>, SO<sub>4</sub><sup><img>−</sup>, h<sup>+</sup>, <img>OH and <sup>1</sup>O<sub>2</sub>, and mechanism of the synergistic degradation of TC-HCl by MIL-53(Fe)/CoWO<sub>4</sub> composites and PMS was proposed.</div></div>","PeriodicalId":272,"journal":{"name":"Chemical Physics","volume":"588 ","pages":"Article 112479"},"PeriodicalIF":2.0000,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic photocatalytic degradation of TC-HCl by MIL-53(Fe)/CoWO4 composite and PMS under visible light\",\"authors\":\"Qian Liu , Panpan Xu , Qianqian Zhang, Guangming Han, Ling Li, Limin Zhou\",\"doi\":\"10.1016/j.chemphys.2024.112479\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A series of novel MIL-53(Fe)/CoWO<sub>4</sub> composites were synthesized by combining MIL-53(Fe) and CoWO<sub>4</sub> nanoparticles via solvothermal method. The structural characterizations showed that CoWO<sub>4</sub> nanoparticles were uniformly distributed on the surface of hexagonal bipyramid MIL-53(Fe). Combining XPS and Mott-Schottky plots, a Z-scheme heterojunction was formed between MIL-53(Fe) and CoWO<sub>4</sub>, resulting in a significant improvement in the electron-hole pair separation efficiency. UV–vis diffused reflectance spectra indicated that the optical arrange of MIL-53(Fe)/CoWO<sub>4</sub> composites were expanded to visible light. The photocatalytic degradation experiments under visible light irradiation showed that MIL/CWO-60 synergistically with PMS degraded 90.5 % of TC-HCl within 50 min. The XRD spectra of used and unused composites were identical, indicating good stability in four consecutive cycles. Electron paramagnetic resonance (EPR) and free radicals trapping experiment revealed that active species included <img>O<sup>2−</sup>, SO<sub>4</sub><sup><img>−</sup>, h<sup>+</sup>, <img>OH and <sup>1</sup>O<sub>2</sub>, and mechanism of the synergistic degradation of TC-HCl by MIL-53(Fe)/CoWO<sub>4</sub> composites and PMS was proposed.</div></div>\",\"PeriodicalId\":272,\"journal\":{\"name\":\"Chemical Physics\",\"volume\":\"588 \",\"pages\":\"Article 112479\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2024-10-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Physics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0301010424003082\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Physics","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301010424003082","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Synergistic photocatalytic degradation of TC-HCl by MIL-53(Fe)/CoWO4 composite and PMS under visible light
A series of novel MIL-53(Fe)/CoWO4 composites were synthesized by combining MIL-53(Fe) and CoWO4 nanoparticles via solvothermal method. The structural characterizations showed that CoWO4 nanoparticles were uniformly distributed on the surface of hexagonal bipyramid MIL-53(Fe). Combining XPS and Mott-Schottky plots, a Z-scheme heterojunction was formed between MIL-53(Fe) and CoWO4, resulting in a significant improvement in the electron-hole pair separation efficiency. UV–vis diffused reflectance spectra indicated that the optical arrange of MIL-53(Fe)/CoWO4 composites were expanded to visible light. The photocatalytic degradation experiments under visible light irradiation showed that MIL/CWO-60 synergistically with PMS degraded 90.5 % of TC-HCl within 50 min. The XRD spectra of used and unused composites were identical, indicating good stability in four consecutive cycles. Electron paramagnetic resonance (EPR) and free radicals trapping experiment revealed that active species included O2−, SO4−, h+, OH and 1O2, and mechanism of the synergistic degradation of TC-HCl by MIL-53(Fe)/CoWO4 composites and PMS was proposed.
期刊介绍：
Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.
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