| Highly efficient degradation of emerging contaminants by magnetic CuO@FexOy derived from natural mackinawite（FeS） in the presence of peroxymonosulfate |
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| 引用本文： | Ruohan Zhang,Maolian Chen,Zhaokun Xiong,Yong Guo,Bo Lai. Highly efficient degradation of emerging contaminants by magnetic CuO@FexOy derived from natural mackinawite（FeS） in the presence of peroxymonosulfate[J]. 中国化学快报, 2022, 33(2): 948-952. DOI: 10.1016/j.cclet.2021.07.029 |
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| 作者姓名： | Ruohan Zhang Maolian Chen Zhaokun Xiong Yong Guo Bo Lai |
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| 作者单位： | 1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University-Pittsburgh Institute,Sichuan University;2. Department of Process Equipment and Safety Engineering, School of Chemical Engineering, Sichuan University;3. Sino-German Centre for Water and Health Research, Sichuan University |
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| 基金项目： | financial support from National Natural Science Foundation of China (No. 51878423)；;China Postdoctoral Science Foundation (No. 2019T120843)；;Sichuan Science and Technology Program (No. 2019YJ0091)； |
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| 摘 要： | In this study,natural mackinawite （Fe S）,a chalcophilic mineral,was utilized to prepare iron/copper bimetallic oxides （Cu O@FexOy） by displacement plating and calcination process.Various characterization methods prove that Cu0is successfully coated on the surface of Fe S,which were further oxidized to Cu O,Fe3O4and/or Fe2O3during calcination process,respectively.Cu O@FexOyperformed highly efficient...
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| 收稿时间： | 2021-05-31 |
Highly efficient degradation of emerging contaminants by magnetic CuO@FexOy derived from natural mackinawite (FeS) in the presence of peroxymonosulfate |
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| Affiliation: | 1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University-Pittsburgh Institute, Sichuan University, Chengdu 610207, China;2. Department of Process Equipment and Safety Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China;3. Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China |
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| Abstract: | In this study, natural mackinawite (FeS), a chalcophilic mineral, was utilized to prepare iron/copper bimetallic oxides (CuO@FexOy) by displacement plating and calcination process. Various characterization methods prove that Cu0 is successfully coated on the surface of FeS, which were further oxidized to CuO, Fe3O4 and/or Fe2O3 during calcination process, respectively. CuO@FexOy performed highly efficient capacity to activate PMS for the degradation of various emerging pollutants including sulfamethoxazole (SMX), carbamazepine (CBZ), bisphenol A (BPA), 2,4-dichlorophenol (2,4-DCP) and diclofenac (DCF) in aqueous solution. Complete removal of the above pollutants was observed after 8 min of CuO@FexOy/PMS treatment. Taking SMX as an example, the key parameters including CuO@FexOy dosage, PMS dosage and initial pH were optimized. The results show that the catalytic system can be worked in a wide pH range (3.0-9.0). The quenching experiments and electron spin resonance (ESR) test demonstrated that the main reactive oxygen species in CuO@FexOy/PMS system were hydroxyl radicals (?OH) and sulfate radicals (SO4?¯), and SO4?¯ was the primary reactive species. Besides, the influence of coexisting anions (i.e., Cl¯, NO3¯, HCO3¯ and H2PO4¯) for the degradation of SMX was explored. CuO@FexOy/PMS system can maintain good catalytic activity and reusability in different water bodies and long-term running. This work provided a green strategy to fabricate the efficient catalyst in PMS-based advanced oxidation processes. |
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