State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Nat Commun. 2022 Feb 3;13(1):658. doi: 10.1038/s41467-022-28217-8.
Radiocesium remediation is desirable for ecological protection, human health and sustainable development of nuclear energy. Effective capture of Cs from acidic solutions is still challenging, mainly due to the low stability of the adsorbing materials and the competitive adsorption of protons. Herein, the rapid and highly selective capture of Cs from strongly acidic solutions is achieved by a robust K-directed layered metal sulfide KInSnS (InSnS-1) that exhibits excellent acid and radiation resistance. InSnS-1 possesses high adsorption capacity for Cs and can serve as the stationary phase in ion exchange columns to effectively remove Cs from neutral and acidic solutions. The adsorption of Cs and HO is monitored by single-crystal structure analysis, and thus the underlying mechanism of selective Cs capture from acidic solutions is elucidated at the molecular level.
为了生态保护、人类健康和核能的可持续发展，放射性铯的修复是可取的。然而，从酸性溶液中有效捕获 Cs 仍然具有挑战性，主要是由于吸附材料的低稳定性和质子的竞争吸附。在此，通过一种具有强耐酸和耐辐射能力的稳健 K 导向层状金属硫化物 KInSnS（InSnS-1），实现了从强酸性溶液中快速且高选择性地捕获 Cs。InSnS-1 对 Cs 具有高吸附容量，可作为离子交换柱的固定相，从中性和酸性溶液中有效地去除 Cs。通过单晶结构分析监测 Cs 和 HO 的吸附，从而在分子水平上阐明了从酸性溶液中选择性捕获 Cs 的基础机制。
Zotero 插件
