Magnetic MoS2/Fe3O4 composite as an effective activator of persulfate for the degradation of tetracycline : performance, activation mechanisms and degradation pathways

© 2024 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY-NC-ND 4.0), which permits copying and redistribution for non-commercial purposes with no derivatives, provided the original work is properly cited (http://creativecommons....

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 89(2024), 7 vom: 20. Apr., Seite 1860-1878
1. Verfasser: Zhang, Lanhe (VerfasserIn)
Weitere Verfasser: Zhang, Qi, Chen, Tengyue, Wang, Changyao, Xiao, Chuan, Guo, Jingbo, Pang, Xiangrui, Liu, Shuhua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Fe MoS activation persulfate tetracycline Molybdenum 81AH48963U Tetracycline F8VB5M810T mehr... Anti-Bacterial Agents Water Pollutants, Chemical
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520 |a © 2024 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY-NC-ND 4.0), which permits copying and redistribution for non-commercial purposes with no derivatives, provided the original work is properly cited (http://creativecommons.org/licenses/by-nc-nd/4.0/). 
520 |a The activated persulfate (PS) process could produce sulfate radical (SO4·-) and rapidly degrade organic pollutants. The application of Fe3O4 as a promising PS activator was limited due to the rapid conversion of Fe2+ to Fe3+ on its surface. Mo4+ on MoS2 surface could be used as a reducing site to convert Fe3+ to Fe2+, but the separation and recovery of MoS2 was complex. In this study, MoS2/Fe3O4 was prepared to accelerate the Fe3+/Fe2+ cycle on Fe3O4 surface and achieved efficient separation of MoS2. The results showed that MoS2/Fe3O4 was more effective for PS activation compared to Fe3O4 or MoS2, with a removal efficiency of 91.8% for 20 mg·L-1 tetracycline (TC) solution under the optimal conditions. Fe2+ and Mo4+ on MoS2/Fe3O4 surface acted as active sites for PS activation with the generation of SO4•-, •OH, •O2-, and 1O2. Mo4+ acted as an electron donor to promote the Fe3+/Fe2+ cycling and thus improved the PS activation capability of MoS2/Fe3O4. The degradation pathways of TC were inferred as hydroxylation, ketylation of dimethylamino group and C-N bond breaking. This study provided a promising activated persulfate-based advanced oxidation process for the efficient degradation of TC by employing MoS2/Fe3O4 as an effective activator 
650 4 |a Journal Article 
650 4 |a Fe 
650 4 |a MoS 
650 4 |a activation 
650 4 |a persulfate 
650 4 |a tetracycline 
650 7 |a Molybdenum  |2 NLM 
650 7 |a 81AH48963U  |2 NLM 
650 7 |a Tetracycline  |2 NLM 
650 7 |a F8VB5M810T  |2 NLM 
650 7 |a Anti-Bacterial Agents  |2 NLM 
650 7 |a Water Pollutants, Chemical  |2 NLM 
700 1 |a Zhang, Qi  |e verfasserin  |4 aut 
700 1 |a Chen, Tengyue  |e verfasserin  |4 aut 
700 1 |a Wang, Changyao  |e verfasserin  |4 aut 
700 1 |a Xiao, Chuan  |e verfasserin  |4 aut 
700 1 |a Guo, Jingbo  |e verfasserin  |4 aut 
700 1 |a Pang, Xiangrui  |e verfasserin  |4 aut 
700 1 |a Liu, Shuhua  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Water science and technology : a journal of the International Association on Water Pollution Research  |d 1986  |g 89(2024), 7 vom: 20. Apr., Seite 1860-1878  |w (DE-627)NLM098149431  |x 0273-1223  |7 nnas 
773 1 8 |g volume:89  |g year:2024  |g number:7  |g day:20  |g month:04  |g pages:1860-1878 
856 4 0 |u http://dx.doi.org/10.2166/wst.2024.076  |3 Volltext 
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