相关实验视频
Updated: Jul 18, 2025
10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
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通过共价有机框架有效和有选择地捕获离子
Xiaojuan Liu1, Feng Gao1, Tiantian Jin1
1Department of Radiochemistry, China Institute of Atomic Energy, 102413, Beijing, China.
Nature communications
|August 22, 2023
概括
新的共价有机框架 (COF) 选择性地以高效率捕获 (Th(IV)). 这一突破推动了的核能,使其能够有效地从稀土元素和中分离出来.
科学领域:
- 材料科学 材料科学 材料科学
- 核化学 核化学 核化学
- 分离科学 分离科学
背景情况:
- 从稀土元素和中选择性地分离 (Th(IV)) 对于推进核能至关重要.
- 了解 (N) 位点在Th (IV) 捕获中的作用,对于设计高效吸附剂至关重要.
研究的目的:
- 设计和研究新的共价有机框架 (COF) 用于选择性捕获Th.
- 阐明选择性协调机制和位对吸附性能的影响.
主要方法:
- 合成两个离子COF:Py-TFImI-25 COF及其去离子化模拟Py-TFIm-25 COF.
- 评价Th(IV) 分离因子,吸收能力和吸附率.
- 使用实验和理论方法研究Th-N协调相互作用机制.
主要成果:
- 无论是Py-TFImI-25 COF还是Py-TFIm-25 COF,都实现了Th(IV) (10^2到10^5) 的最高分离系数.
- 与Py-TFImI-25 COF和现有吸附剂相比,Py-TFIm-25 COF显示出更高的Th(IV) 吸收能力和吸附率.
- 证实选择性捕获通过Th-N协调相互作用发生.
结论:
- 设计的COF在选择性分离方面表现出色,这对于核能应用至关重要.
- 该研究提供了对吸附剂设计的结构性能关系的基本见解,指导新材料的开发.
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