Oxygen vacancy modulated interface chemistry: identifying iron(iv) in heterogeneous Fenton reaction
文献类型：期刊论文
| 作者 | Yu, Yaqin; Chen, Haoze; Yan, Li; Jing, Chuanyong |
| 刊名 | ENVIRONMENTAL SCIENCE-NANO
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 8期号:4页码:978-985 |
| ISSN号 | 2051-8153 |
| 英文摘要 | Introducing transition-metal oxides as co-catalysts into classical Fenton chemistry holds great promise for improving the recycling of iron species. However, the underlying chemistry that controls the generation and transformation of ferryl species (Fe-IV) during such heterogeneous Fenton reactions is not fully understood. Herein, we modulated oxygen-vacancy-enriched WO3-x and identified surface Fe-IV species using in situ spectroscopy and density functional theory calculations. Direct spectroscopic evidence shows that WO3-x caused the reaction of Fe-II with H2O2 to switch from the formation of Fe-III complexes towards direct generation of Fe-IV. Fe-IV intermediates oxidize H2O2 to O-2(-)/O-1(2), accompanied by the production of Fe-III. Fe-III is reduced to Fe-II by the electrons localized in the t(2g) orbitals of WO3-x, stimulating the generation of OH. This study opens a new chapter in the mechanistic understanding of Fe-IV formation and extends the development of co-catalysts via surface engineering in remediation techniques. |
| WOS研究方向 | Chemistry, Multidisciplinary ; Environmental Sciences ; Nanoscience & Nanotechnology |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45803]  |
| 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Yaqin,Chen, Haoze,Yan, Li,et al. Oxygen vacancy modulated interface chemistry: identifying iron(iv) in heterogeneous Fenton reaction[J]. ENVIRONMENTAL SCIENCE-NANO,2021,8(4):978-985. |
| APA | Yu, Yaqin,Chen, Haoze,Yan, Li,&Jing, Chuanyong.(2021).Oxygen vacancy modulated interface chemistry: identifying iron(iv) in heterogeneous Fenton reaction.ENVIRONMENTAL SCIENCE-NANO,8(4),978-985. |
| MLA | Yu, Yaqin,et al."Oxygen vacancy modulated interface chemistry: identifying iron(iv) in heterogeneous Fenton reaction".ENVIRONMENTAL SCIENCE-NANO 8.4(2021):978-985. |
入库方式： OAI收割
来源：生态环境研究中心
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