Remarkably enhanced sulfate radical-based photo-Fenton-like degradation of levofloxacin using the reduced mesoporous MnO@MnOx microspheres
Remarkably enhanced sulfate radical-based photo-Fenton-like degradation of levofloxacin using the reduced mesoporous MnO@MnOx microspheres
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使用还原介孔MnO@MnOx微球显着增强硫酸根基左氧氟沙星的类光芬顿降解
DOI:
10.1016/j.cej.2019.122340
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发表时间:
2020
影响因子:
15.1
通讯作者:
Yan Kai
中科院分区:
文献类型:
--
作者:
Wang Anqi;Chen Zuo;Zheng Zhikeng;Xu Hong;Wang Hui;Hu Kang;Yan Kai
Sulfate radical-based advanced oxidation processes (SR-AOPs) are promising alternatives to conventional hydroxyl radical-AOPs for recalcitrant contaminants elimination in water treatment. Herein, the efficient and fast degradation of antibiotic levofloxacin (LEV) using mesoporous MnO@MnOxmicrospheres was successfully achieved with peroxymonosulfate (PMS) as an oxidant under simulated sunlight irradiation. Remarkably, MnO@MnOxcatalyst achieves 98.1% degradation and 81.4% mineralization of LEV after being irradiated for 30 min, and SO4radical dot−,radical dotOH, O2radical dot−and1O2species play the imperative role in the SR-photo-Fenton-like oxidation process. Through the reaction intermediates identification, the LEV degradation pathways are speculated. The deterioration of performance is inconspicuous in the cyclic runs with negligible Mn-ions leaching. The excellent catalytic activity and stability of the H2-reduced MnO@MnOxmicrosphere are ascribed to the mesoporous structure, multivalence and oxygen vacancies, resulting in the large specific area, strong UV–vis response, effective charge separation coupling with desirable self-redox properties of Mn-ions on the catalyst surface. This study offers a useful guideline to efficiently degrade recalcitrant contaminants for water treatment.
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影响因子:
15.1
作者:
Zhao Zhiwei;Zhao Jianhui;Yang Chun
通讯作者:
Yang Chun
影响因子:
22.1
作者:
Wang, Anqi;Wang, Hui;Yan, Kai
通讯作者:
Yan, Kai
影响因子:
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作者:
Ke Xu;Weiwei Ben;Wencui Ling;Yu Zhang;J. Qu;Z. Qiang
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Ke Xu;Weiwei Ben;Wencui Ling;Yu Zhang;J. Qu;Z. Qiang
影响因子:
9.5
作者:
Kumar, Amit;Rana, Anamika;Stadler, Florian J.
通讯作者:
Stadler, Florian J.
影响因子:
2.8
作者:
P. Ramacharyulu;G. K. Prasad;J. P. Kumar;K. Ganesan;B. Singh;K. Dwivedi
通讯作者:
P. Ramacharyulu;G. K. Prasad;J. P. Kumar;K. Ganesan;B. Singh;K. Dwivedi