Umbellate Distortions of the Uranyl Coordination Environment Result in a Stable and Porous Polycatenated Framework That Can Effectively Remove Cesium from Aqueous Solutions
Umbellate Distortions of the Uranyl Coordination Environment Result in a Stable and Porous Polycatenated Framework That Can Effectively Remove Cesium from Aqueous Solutions
复制标题
铀酰配位环境的伞形畸变产生稳定且多孔的多链框架，可以有效去除水溶液中的铯
DOI：
10.1021/jacs.5b02480
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发表时间：
2015-05-20
影响因子：
15
通讯作者：
Wang, Shuao
中科院分区：
文献类型：
--
作者：
Wang, Yanlong;Liu, Zhiyong;Wang, Shuao
对于废物管理和污染修复来说，寻找新的化学耐用且耐辐射的吸收材料来吸收核燃料循环中产生的锕系元素及其裂变产物仍然是非常必要的。在这里，我们提出了一种罕见的情况下，3D utanyl有机骨架材料通过polycatenating三套gtaphene类层，表现出显着的伞形扭曲的铀酰赤道面研究彻底的线性过境计算。这种独特的结构安排导致高β和γ辐射抗性和化学稳定性的水溶液中的pH范围从3至12。该材料具有迄今为止已知的所有锕系化合物中最高的表面积和结构中完全可交换的[（CH3）（2）NH2]（+）阳离子，能够选择性地从水溶液中除去铯，同时保留多链骨架结构。
Searching for new chemically durable and radiation-resistant absorbent materials for actinides and their fission products generated in the nuclear fuel cycle remain highly desirable, for both waste management and contamination remediation. Here we present a rare case of 3D utanyl organic framework material built through polycatenating of three sets of gtaphene-like layers, which exhibits significant umbellate distortions in the uranyl equatorial planes studied thoroughly by linear transit calculations. This unique structural arrangement leads to high beta and gamma radiation-resistance and chemical stability in aqueous solutions within a wide pH range from 3 to 12. Being equipped with the highest surface area among all actinide compounds known to date and completely exchangeable [(CH3)(2)NH2](+) cations in the structure, this material is able to selectively remove cesium from aqueous solutions while retaining the polycatenated framework structure.