刚性-灵活性调节和硬软的捐赠者组合:共价有机框架中的双重策略 构建阿克化物/兰坦化物分离
Run-Jian Cao1,2, Heng-Yi Zhou1, Qun-Yan Wu1
1Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
Advanced materials (Deerfield Beach, Fla.)
|December 12, 2024
概括
一种新型的共价有机框架 (COF) 从核废物中选择性地捕获超元素 (TRU),如海王星和. 这一突破推动了可持续的核能和废物管理,通过高效地将活性化物从化物分离出来.
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
- 环境科学 环境科学
背景情况:
- 从兰化物中分离活性化物对于核废物管理和可持续核能至关重要.
- 回收转元素 (TRU) 对核技术应用至关重要.
研究的目的:
- 设计和合成一个专门的共价有机框架 (COF) 来有效和选择性地从酸性水溶液中捕获TRU.
- 研究一种双重策略,将分子刚性和灵活性与硬和软的捐赠原子在COF设计中结合起来.
主要方法:
- 为了设计COF的单体,采用了双重策略,整合了分子刚性和灵活性.
- 合成的COF,DAPhen-COF,用于从酸性溶液中捕获TRU.
- 评估了DAPhen-COF对Np (V),Pu (IV) 和Am (III) 与兰坦化物的分离性能.
主要成果:
- DAPhen-COF实现了高的去除率:Np{V}的99.1%,Pu{IV}的95.8%,Am{III}的98.6%.
- COF对Np (V) 与Gd的选择性异常,分离因子超过5000.
- 该材料的设计促进了跨元素在化物上的各种氧化状态的增强分离.
结论:
- 开发的COF提供了一种高效和有选择性的方法,用于在酸性介质中将TRU与兰化物分离.
- 这项研究展示了COF的首次应用,用于将多个TRU分离在兰坦化物上.
- 这些发现有助于改善核废物管理和可持续发展的核能发展.
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