Haixia Wu, Xiao Han, Xinrui Guo, Yiyun Wen, Bin Zheng, Biming Liu
{"title":"用于臭氧处理的 MnFe2O4/MoS2 催化剂:酚类废水处理的优化和机理分析。","authors":"Haixia Wu, Xiao Han, Xinrui Guo, Yiyun Wen, Bin Zheng, Biming Liu","doi":"10.1007/s11356-024-33984-6","DOIUrl":null,"url":null,"abstract":"<p><p>The performance of catalytic ability of MFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> in the ozonation process was investigated in this work. The synthesized MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> was optimize prepared and then characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photo-electron spectroscopy, and magnetic saturation strength. The results showed that when C<sub>phenol</sub> = 200 mg/L, initial pH = 9.0, Q = 0.10 L/min, and C<sub>MnFe2O4/MoS2</sub> = 0.10 g/L, MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> addition improved the degradation efficiency of phenol by 20.0%. The effects of pH, catalyst dosage, and inorganic ions on the phenol removal by the MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> catalytic ozonation were investigated. Five cycle experiments proved that MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> had good recyclability and stability. MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> also showed good catalytic performance in the treatment of coal chemical wastewater pesticide wastewater. The MnFe<sub>2</sub>O<sub>4</sub> doped with MoS<sub>2</sub> could provide abundant surface active sites for ozone and promote the stable cycle of Mn<sup>2+</sup>/Mn<sup>3+</sup>and Fe<sup>2+</sup>/Fe<sup>3+</sup>, thus generating large amounts of •OH and improving the degradation of phenol by ozonation. The MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub>/ozonation treatment system provides a technical reference and theoretical basis for industrial wastewater treatment.</p>","PeriodicalId":545,"journal":{"name":"Environmental Science and Pollution Research","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> catalyst used for ozonation: optimization and mechanism analysis of phenolic wastewater treatment.\",\"authors\":\"Haixia Wu, Xiao Han, Xinrui Guo, Yiyun Wen, Bin Zheng, Biming Liu\",\"doi\":\"10.1007/s11356-024-33984-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The performance of catalytic ability of MFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> in the ozonation process was investigated in this work. The synthesized MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> was optimize prepared and then characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photo-electron spectroscopy, and magnetic saturation strength. The results showed that when C<sub>phenol</sub> = 200 mg/L, initial pH = 9.0, Q = 0.10 L/min, and C<sub>MnFe2O4/MoS2</sub> = 0.10 g/L, MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> addition improved the degradation efficiency of phenol by 20.0%. The effects of pH, catalyst dosage, and inorganic ions on the phenol removal by the MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> catalytic ozonation were investigated. Five cycle experiments proved that MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> had good recyclability and stability. MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub> also showed good catalytic performance in the treatment of coal chemical wastewater pesticide wastewater. The MnFe<sub>2</sub>O<sub>4</sub> doped with MoS<sub>2</sub> could provide abundant surface active sites for ozone and promote the stable cycle of Mn<sup>2+</sup>/Mn<sup>3+</sup>and Fe<sup>2+</sup>/Fe<sup>3+</sup>, thus generating large amounts of •OH and improving the degradation of phenol by ozonation. The MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub>/ozonation treatment system provides a technical reference and theoretical basis for industrial wastewater treatment.</p>\",\"PeriodicalId\":545,\"journal\":{\"name\":\"Environmental Science and Pollution Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Science and Pollution Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1007/s11356-024-33984-6\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/7/5 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"0\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science and Pollution Research","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s11356-024-33984-6","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/7/5 0:00:00","PubModel":"Epub","JCR":"0","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
MnFe2O4/MoS2 catalyst used for ozonation: optimization and mechanism analysis of phenolic wastewater treatment.
The performance of catalytic ability of MFe2O4/MoS2 in the ozonation process was investigated in this work. The synthesized MnFe2O4/MoS2 was optimize prepared and then characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photo-electron spectroscopy, and magnetic saturation strength. The results showed that when Cphenol = 200 mg/L, initial pH = 9.0, Q = 0.10 L/min, and CMnFe2O4/MoS2 = 0.10 g/L, MnFe2O4/MoS2 addition improved the degradation efficiency of phenol by 20.0%. The effects of pH, catalyst dosage, and inorganic ions on the phenol removal by the MnFe2O4/MoS2 catalytic ozonation were investigated. Five cycle experiments proved that MnFe2O4/MoS2 had good recyclability and stability. MnFe2O4/MoS2 also showed good catalytic performance in the treatment of coal chemical wastewater pesticide wastewater. The MnFe2O4 doped with MoS2 could provide abundant surface active sites for ozone and promote the stable cycle of Mn2+/Mn3+and Fe2+/Fe3+, thus generating large amounts of •OH and improving the degradation of phenol by ozonation. The MnFe2O4/MoS2/ozonation treatment system provides a technical reference and theoretical basis for industrial wastewater treatment.
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