吸附
铯
化学
硫化物
环境修复
选择性吸附
离子交换
相(物质)
金属
无机化学
离子
化学工程
污染
有机化学
工程类
生物
生态学
作者
Jun-Hao Tang,Jiance Jin,Wei‐An Li,Xi Zeng,Ming‐Shien Wen,Ji‐Long Li,Tian-Tian Lv,Ying-Chen Peng,Mei‐Ling Feng,Xiao‐Ying Huang
标识
DOI:10.1038/s41467-022-28217-8
摘要
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 KInSnS4 (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 H3O+ 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.
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