| DOI | 10.1038/s41586-019-1926-4
|
| Redox-switchable carboranes for uranium capture and release |
| Marques, Joao C.1,2; Li, Meng1,3; Schaak, Diane1; Robson, Drew N.1,3; Li, Jennifer M.1,3
|
| 2020-01-09
|
| 发表期刊 | NATURE
 |
| ISSN | 0028-0836
|
| EISSN | 1476-4687
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| 出版年 | 2020
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| 卷号 | 577期号:7792页码:652-+ |
| 文章类型 | Article
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| 语种 | 英语
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| 国家 | USA; Israel |
| 英文关键词 | The uranyl ion (UO22+
U(vi) oxidation state) is the most common form of uranium found in terrestrial and aquatic environments and is a central component in nuclear fuel processing and waste remediation efforts. Uranyl capture from either seawater or nuclear waste has been well studied and typically relies on extremely strong chelating/binding affinities to UO22+ using chelating polymers(1,2), porous inorganic(3-5) or carbon-based(6,7) materials, as well as homogeneous(8) compounds. By contrast, the controlled release of uranyl after capture is less established and can be difficult, expensive or destructive to the initial material(2,9). Here we show how harnessing the redox-switchable chelating and donating properties of an ortho-substituted closo-carborane (1,2-(Ph2PO)(2)-1,2-C2B10H10) cluster molecule can lead to the controlled chemical or electrochemical capture and release of UO22+ in monophasic (organic) or biphasic (organic/aqueous) model solvent systems. This is achieved by taking advantage of the increase in the ligand bite angle when the closo-carborane is reduced to the nido-carborane, resulting in C-C bond rupture and cage opening. The use of electrochemical methods for uranyl capture and release may complement existing sorbent and processing systems.
Redox-switchable chelation is demonstrated for a carborane cluster molecule, leading to controlled chemical or electrochemical capture and release of uranyl in monophasic or biphasic model solvent systems.
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| 领域 | 地球科学
; 气候变化
; 资源环境
|
| 收录类别 | SCI-E
; SSCI
|
| WOS记录号 | WOS:000508801100001
|
| WOS关键词 | AQUEOUS-SOLUTIONS
; MOLECULAR-ENERGIES
; CHEMISTRY
; EXTRACTION
; REDUCTION
; RECOVERY
; SEAWATER
; REMOVAL
; CRYSTAL
; METALS
|
| WOS类目 | Multidisciplinary Sciences
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| WOS研究方向 | Science & Technology - Other Topics
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/281054
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| 专题 | 地球科学
资源环境科学
气候变化
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| 作者单位 | 1.Harvard Univ, Rowland Inst, Cambridge, MA 02138 USA;
2.Champalimaud Ctr Unknown, Champalimaud Res, Lisbon, Portugal;
3.Max Planck Inst Biol Cybernet, Tubingen, Germany
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推荐引用方式
GB/T 7714 |
Marques, Joao C.,Li, Meng,Schaak, Diane,et al. Redox-switchable carboranes for uranium capture and release[J].
NATURE,2020,577(7792):652-+.
|
| APA |
Marques, Joao C.,Li, Meng,Schaak, Diane,Robson, Drew N.,&Li, Jennifer M..(2020).Redox-switchable carboranes for uranium capture and release.NATURE,577(7792),652-+.
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| MLA |
Marques, Joao C.,et al."Redox-switchable carboranes for uranium capture and release".NATURE 577.7792(2020):652-+.
|
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