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Oxidation of tetracycline hydrochloride with a photoenhanced MIL-101(Fe)/g-C3N4/PMS system: Synergetic effects and radical/nonradical pathways.
Song, Jianjun; Yuan, Xiaoying; Sun, Meikun; Wang, Zuchen; Cao, Gege; Gao, Kangqi; Yang, Chuanxi; Zhang, Fengmei; Dang, Feng; Wang, Weiliang.
Afiliación
  • Song J; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
  • Yuan X; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
  • Sun M; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
  • Wang Z; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
  • Cao G; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
  • Gao K; Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
  • Yang C; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China. Electronic address: yangchuanxi1989@hotmail.com.
  • Zhang F; Department of Occupational and Environmental Health, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China. Electronic address: fengmeizhang2003@sdu.edu.cn.
  • Dang F; Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Shandong University, Jinan 250061, China.
  • Wang W; School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, China. Electronic address: sdqcsdnu@163.com.
Ecotoxicol Environ Saf ; 251: 114524, 2023 Feb.
Article en En | MEDLINE | ID: mdl-36634481
MIL-101(Fe)-based catalysts have been widely used for degradation of organic pollutants based on peroxymonosulfate (PMS) activation. Hence, a facile calcination and hydrothermal method was used in this study to prepare a MIL-101(Fe)/g-C3N4 composite catalyst with high activity and high stability for PMS activation to degrade tetracycline hydrochloride (TC) under visible-light irradiation. We clearly elucidated the mechanism involved in the MIL-101(Fe)/g-C3N4 photo Fenton-catalyzed PMS activation process by separating the PMS activation and pollutant oxidation processes. The synergetic effects of MIL-101(Fe) and g-C3N4 involved MIL-101(Fe) acting as an electron shuttle mediating electron transfer from the organic substrate to PMS, accompanied by redox cycling of the surface Fe(II)/Fe(III). Multiple experimental results indicated that PMS was bound to the surface of MIL-101(Fe)/g-C3N4 during visible irradiation and generation of sulfate radicals (SO4•-), hydroxyl radicals (•OH) and superoxide anion free radicals (•O2-) for the radical pathway and singlet oxygen (1O2) and holes (h+) for the nonradical pathway. The major degradation pathways for TC can be described as demethylation, deamination, deamidation and carbonylation. This work provides valuable information and advances the fundamental understanding needed for design and syntheses of metal-free conjugated polymers modified by metal-organic frameworks for heterogeneous photo-Fenton reactions.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estructuras Metalorgánicas Idioma: En Revista: Ecotoxicol Environ Saf Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estructuras Metalorgánicas Idioma: En Revista: Ecotoxicol Environ Saf Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos