Promoted photoelectrocatalytic degradation of BPA with peroxymonosulfate on a MnFe2O4 modified carbon paper cathode | |
Zhang, Mingming; Gong, Yan; Ma, Ning; Zhao, Xu | |
刊名 | CHEMICAL ENGINEERING JOURNAL |
2020-11-01 | |
卷号 | 399页码:1-13 |
关键词 | Photoelectrocatalysis Peroxymonosulfate MnFe2O4 Bisphenol A |
ISSN号 | 1385-8947 |
英文摘要 | The combination of photoelectrocatalytic (PEC) and sulfate radical (SO4 center dot-)-based advanced oxidation technology (SR-AOP) has been regarded as a promising technology for efficient removal of pollutants by in-situ generated reactive radicals in the field of environmental remediation. Herein, a novel PEC/SR-AOP system was constructed by employing a BiVO4 as photoanode and a MnFe2O4 modified carbon fiber paper (MnFe2O4/CFP) as cathode. The introduction of MnFe2O4 greatly promotes the peroxymonosulfate (PMS) activation of CFP cathode, and the PEC process accelerates the PMS activation of MnFe2O4 for the high-active SO4 center dot- production. As a result, the BiVO4-MnFe2O4/CFP system exhibited remarkably enhanced photoelectrocatalytic performances toward Bisphenol A (BPA) degradation. Nearly 100% of BPA can be degraded after 90 min irradiation under the optimal condition of 1.0 V applied bias and 1 mM PMS addition. The apparent rate constant of BPA degradation over the BiVO4-MnFe2O4/CFP PEC/PMS system is achieved to 0.0596 min(-1). Radical scavenger experiments and electron spin resonance confirmed that the generated center dot OH and SO4 center dot- showed the responsible for BPA degradation during PEC reaction. The results of XPS and LSV tests indicated the favorable redox reaction between MnFe2O4/CFP and PMS, which results in the generation of high active SO4 center dot-. This work provided a promising way to synthesize other novel PEC systems with excellent photoelectrocatalytic performance for environmental pollutants removal. |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/45348] |
专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
推荐引用方式 GB/T 7714 | Zhang, Mingming,Gong, Yan,Ma, Ning,et al. Promoted photoelectrocatalytic degradation of BPA with peroxymonosulfate on a MnFe2O4 modified carbon paper cathode[J]. CHEMICAL ENGINEERING JOURNAL,2020,399:1-13. |
APA | Zhang, Mingming,Gong, Yan,Ma, Ning,&Zhao, Xu.(2020).Promoted photoelectrocatalytic degradation of BPA with peroxymonosulfate on a MnFe2O4 modified carbon paper cathode.CHEMICAL ENGINEERING JOURNAL,399,1-13. |
MLA | Zhang, Mingming,et al."Promoted photoelectrocatalytic degradation of BPA with peroxymonosulfate on a MnFe2O4 modified carbon paper cathode".CHEMICAL ENGINEERING JOURNAL 399(2020):1-13. |
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