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A stable and easily prepared copper oxide catalyst for degradation of organic pollutants by peroxymonosulfate activation.
J Hazard Mater. 2020 04 05; 387:121995.JH

Abstract

A direct one-step calcination preparation of CuO catalyst (CuO-3) using polyethylene glycol (PEG) as nonionic polymeric structure directing agent was developed for activation of peroxymonosulfate (PMS). The morphological and physicochemical properties of the CuO-3 were characterized and the catalytic activity for degradation of organic pollutants was evaluated. The resultant CuO-3 with significantly enhanced surface area exhibited excellent catalytic performance of phenolic organic pollutants degradation. The reaction mechanism of the PMS/CuO system was systematically investigated with a series of radical quenching tests and the analysis of electron paramagnetic resonance (EPR) spectroscopy. Quite different from traditional hydroxyl radicals (OH) and sulfate radical (SO4-) based advanced oxidation processes, singlet oxygen (1O2) was identified as the dominate reactive species responsible for the degradation of organic pollutants. Moreover, the main formation pathway of 1O2 was also investigated. The results indicated that the superoxide radical (O2-) was involved in the generation of 1O2 as a crucial precursor. Also, the PMS/CuO-3 system exhibited satisfactory stability and reusability under neutral conditions as well as high removal of organic pollutants in the presence of inorganic anions. This work not only provides a novel and stable preparation method for CuO catalyst, but also gives a deeper insight into the mechanisms of PMS activation by CuO.

Authors+Show Affiliations

School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin, 300401, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin, 300401, China.School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin, 300401, China. Electronic address: tjy800112@163.com.School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing, 400044, China. Electronic address: cuifuyi@hit.edu.cn.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31901849

Citation

Wang, Songxue, et al. "A Stable and Easily Prepared Copper Oxide Catalyst for Degradation of Organic Pollutants By Peroxymonosulfate Activation." Journal of Hazardous Materials, vol. 387, 2020, p. 121995.
Wang S, Gao S, Tian J, et al. A stable and easily prepared copper oxide catalyst for degradation of organic pollutants by peroxymonosulfate activation. J Hazard Mater. 2020;387:121995.
Wang, S., Gao, S., Tian, J., Wang, Q., Wang, T., Hao, X., & Cui, F. (2020). A stable and easily prepared copper oxide catalyst for degradation of organic pollutants by peroxymonosulfate activation. Journal of Hazardous Materials, 387, 121995. https://doi.org/10.1016/j.jhazmat.2019.121995
Wang S, et al. A Stable and Easily Prepared Copper Oxide Catalyst for Degradation of Organic Pollutants By Peroxymonosulfate Activation. J Hazard Mater. 2020 04 5;387:121995. PubMed PMID: 31901849.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A stable and easily prepared copper oxide catalyst for degradation of organic pollutants by peroxymonosulfate activation. AU - Wang,Songxue, AU - Gao,Shanshan, AU - Tian,Jiayu, AU - Wang,Qiao, AU - Wang,Tianyu, AU - Hao,Xiujuan, AU - Cui,Fuyi, Y1 - 2019/12/30/ PY - 2019/11/01/received PY - 2019/12/22/revised PY - 2019/12/28/accepted PY - 2020/1/7/pubmed PY - 2020/1/7/medline PY - 2020/1/6/entrez KW - Copper oxide KW - Mechanism KW - Organic pollutants KW - Peroxymonosulfate KW - Singlet oxygen SP - 121995 EP - 121995 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 387 N2 - A direct one-step calcination preparation of CuO catalyst (CuO-3) using polyethylene glycol (PEG) as nonionic polymeric structure directing agent was developed for activation of peroxymonosulfate (PMS). The morphological and physicochemical properties of the CuO-3 were characterized and the catalytic activity for degradation of organic pollutants was evaluated. The resultant CuO-3 with significantly enhanced surface area exhibited excellent catalytic performance of phenolic organic pollutants degradation. The reaction mechanism of the PMS/CuO system was systematically investigated with a series of radical quenching tests and the analysis of electron paramagnetic resonance (EPR) spectroscopy. Quite different from traditional hydroxyl radicals (OH) and sulfate radical (SO4-) based advanced oxidation processes, singlet oxygen (1O2) was identified as the dominate reactive species responsible for the degradation of organic pollutants. Moreover, the main formation pathway of 1O2 was also investigated. The results indicated that the superoxide radical (O2-) was involved in the generation of 1O2 as a crucial precursor. Also, the PMS/CuO-3 system exhibited satisfactory stability and reusability under neutral conditions as well as high removal of organic pollutants in the presence of inorganic anions. This work not only provides a novel and stable preparation method for CuO catalyst, but also gives a deeper insight into the mechanisms of PMS activation by CuO. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/31901849/A_stable_and_easily_prepared_copper_oxide_catalyst_for_degradation_of_organic_pollutants_by_peroxymonosulfate_activation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(19)31949-1 DB - PRIME DP - Unbound Medicine ER -
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