Metal-free black-red phosphorus as an efficient heterogeneous reductant to boost Fe3+/Fe2+ cycle for peroxymonosulfate activation
文献类型：期刊论文
| 作者 | Zhou, Hongyu; Peng, Jiali; Li, Jiayi; You, Junjie; Lai, Leiduo; Liu, Rui; Ao, Zhimin; Yao, Gang; Lai, Bo |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 188 |
| 关键词 | Black-red phosphorus Peroxymonosulfate Fe3+/Fe2+ cycle Mechanism |
| ISSN号 | 0043-1354 |
| 英文摘要 | In this work, a novel metal-free black-red phosphorus (BRP) was prepared from red phosphorus (RP) and applied in Fe2+ /peroxymonosulfate (PMS) process. Compared with that of RP, the contaminant degradation performance of BRP was significantly elevated due to the enhanced electron transfer from BRP to Fe3+. This enhancement was mainly induced by size decrease effect, the removal of oxidation layer and the partial phase conversion. Moreoevr, BRP avoided the radical quenching reaction caused by reductant itself, whereas it was inevitable using homogeneous reductant like hydroxylamine. More importantly, the system had a superior recyclability and strong resistance to natural water. Though concurrent side-reaction between PMS and BRP occured, multiple PMS dosage could remarkedly alleviated the sidereaction, thus elevating PMS utilization efficiency. The dominant BRP oxidation products included phosphite and phosphate. Interestingly, moderate increase of Fe3+ concentration could efficiently reduce the by-product formation via the prompt PMS activation by regenerated Fe2+. Our work clarified the acceleration mechanism of Fe3+/Fe2+ cycle by BRP and proposed the control strategy of by-prodoct formation. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45776]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Sichuan Univ, Sino German Ctr Water & Hlth Res, Chengdu 610065, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 3.Guangdong Univ Technol, Sch Environm Sci & Engn, Inst Environm Hlth & Pollut Control, Guangdong Key Lab Environm Catal 4.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Coll Architecture & Environm, Chengdu 610065, Peoples R China 5.Rhein Westfal TH Aachen, Inst Environm Engn, Aachen, Germany |
| 推荐引用方式 GB/T 7714 | Zhou, Hongyu,Peng, Jiali,Li, Jiayi,et al. Metal-free black-red phosphorus as an efficient heterogeneous reductant to boost Fe3+/Fe2+ cycle for peroxymonosulfate activation[J]. WATER RESEARCH,2021,188. |
| APA | Zhou, Hongyu.,Peng, Jiali.,Li, Jiayi.,You, Junjie.,Lai, Leiduo.,...&Lai, Bo.(2021).Metal-free black-red phosphorus as an efficient heterogeneous reductant to boost Fe3+/Fe2+ cycle for peroxymonosulfate activation.WATER RESEARCH,188. |
| MLA | Zhou, Hongyu,et al."Metal-free black-red phosphorus as an efficient heterogeneous reductant to boost Fe3+/Fe2+ cycle for peroxymonosulfate activation".WATER RESEARCH 188(2021). |
入库方式： OAI收割
来源：生态环境研究中心
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