Activation of peroxymonosulfate by novel Pt/Al2O3 membranes via a nonradical mechanism for efficient degradation of electron-rich aromatic pollutants
文献类型：期刊论文
| 作者 | Wang, Yan; Hui, Shaohua; Zhan, Sihui; Djellabi, Ridha; Li, Jiayu; Zhao, Xu |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 381页码:1-13 |
| 关键词 | Pt/Al2O3 membrane Peroxymonosulfate activation Nonradical mechanism Heterogeneous catalysts |
| ISSN号 | 1385-8947 |
| 英文摘要 | Novel flexible Pt/Al2O3 membranes were prepared and applied as catalysts for the degradation of organic pollutants in the presence of peroxymonosulfate (PMS). 100% of bisphenol A (BPA) could be removed within 20 min by using fresh Pt/Al2O3-membrane-activated PMS, which represents outstanding performance compared to catalysts reported in recent years. The influence of the PMS dosage, initial BPA concentration, and initial pH on BPA degradation were studied. The mechanism of BPA degradation in this system was investigated in depth. The BPA degradation process was not inhibited by the addition of radical scavengers to the system, and no free radicals were detected using ESR analysis. Additionally, the PMS molecules were only decomposed in the presence of both the catalysts and BPA. The results also demonstrated that only electron-rich aromatics could be degraded by this system. Furthermore, in contrast to typical degradation pathways involving the generation of free radicals, no intermediates formed via (OH)-O-center dot addition reaction were detected. Based on these findings, a nonradical pathway was suggested rather than a conventional (OH)-O-center dot/SO4 center dot- radical-based advanced oxidation process (AOP) mechanism. BPA is efficiently degraded by the transfer of electrons from its pi-pi aromatic ring to PMS via the noble metal Pt as transfer medium in this reaction. The findings in this work broaden the understanding of the use of activated PMS for the degradation of organic pollutants, and extend the application of flexible inorganic membranes in wastewater treatment. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45234]  |
| 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 | Wang, Yan,Hui, Shaohua,Zhan, Sihui,et al. Activation of peroxymonosulfate by novel Pt/Al2O3 membranes via a nonradical mechanism for efficient degradation of electron-rich aromatic pollutants[J]. CHEMICAL ENGINEERING JOURNAL,2020,381:1-13. |
| APA | Wang, Yan,Hui, Shaohua,Zhan, Sihui,Djellabi, Ridha,Li, Jiayu,&Zhao, Xu.(2020).Activation of peroxymonosulfate by novel Pt/Al2O3 membranes via a nonradical mechanism for efficient degradation of electron-rich aromatic pollutants.CHEMICAL ENGINEERING JOURNAL,381,1-13. |
| MLA | Wang, Yan,et al."Activation of peroxymonosulfate by novel Pt/Al2O3 membranes via a nonradical mechanism for efficient degradation of electron-rich aromatic pollutants".CHEMICAL ENGINEERING JOURNAL 381(2020):1-13. |
入库方式： OAI收割
来源：生态环境研究中心
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