Sustaining reactivity of Fe-0 for nitrate reduction via electron transfer between dissolved Fe2+ and surface iron oxides
文献类型：期刊论文
| 作者 | Yang, Li; Hu, Chun; Chen, Zhan; Hu, Xuexiang; Wang, Haibo; Han, Luchao |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2016-05-05 |
| 卷号 | 308期号:0页码:208-215 |
| 关键词 | Ferrous Iron Interface Electron Transfer Iron Oxides Zero-valent Iron |
| DOI | 10.1016/j.jhazmat.2016.01.047 |
| 英文摘要 | The mechanism of the effects of Fe-aq(2+) on the reduction of NO3- by Fe-0 was investigated. The effects of initial pH on the rate of NO3- reduction and the Fe-0 surface characteristics revealed Fe-aq(2+) and the characteristics of minerals on the surface of Fe-0 played an important role in NO3- reduction. Both NO3- reduction and the decrease of Fe-aq(2+) exhibited similar kinetics and were promoted by each other. This promotion was associated with the types of the surface iron oxides of Fe-0. Additionally, further reduction of NO3- produced more surface iron oxides, supplying more active sites for Fe-aq(2+), resulting in more electron transfer between Fe2+ and surface iron oxides and a higher reaction rate. Using the isotope specificity of Fe-57 Mossbauer spectroscopy, it was verified that the Fe-aq(2+) was continuously converted into Fe3+ oxides on the surface of Fe-0 and then converted into Fe3O4 via electron transfer between Fe2+ and the pre-existing surface Fe3+ oxides. Electrochemistry measurements confirmed that the spontaneous electron transfer between the Fe2+ and structural Fe3+ species accelerated the interfacial electron transfer between the Fe species and NO3-. This study provides a new insight into the interaction between Fe species and contaminants and interface electron transfer. (C) 2016 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36214]  |
| 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 | Yang, Li,Hu, Chun,Chen, Zhan,et al. Sustaining reactivity of Fe-0 for nitrate reduction via electron transfer between dissolved Fe2+ and surface iron oxides[J]. JOURNAL OF HAZARDOUS MATERIALS,2016,308(0):208-215. |
| APA | Yang, Li,Hu, Chun,Chen, Zhan,Hu, Xuexiang,Wang, Haibo,&Han, Luchao.(2016).Sustaining reactivity of Fe-0 for nitrate reduction via electron transfer between dissolved Fe2+ and surface iron oxides.JOURNAL OF HAZARDOUS MATERIALS,308(0),208-215. |
| MLA | Yang, Li,et al."Sustaining reactivity of Fe-0 for nitrate reduction via electron transfer between dissolved Fe2+ and surface iron oxides".JOURNAL OF HAZARDOUS MATERIALS 308.0(2016):208-215. |
入库方式： OAI收割
来源：生态环境研究中心
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