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Highly selective cesium(I) capture under acidic conditions by a layered sulfide.

ABSTRACT: 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.

SUBMITTER: Tang JH

PROVIDER: S-EPMC8813942 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature

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Highly selective cesium(I) capture under acidic conditions by a layered sulfide.

Tang Jun-Hao JH Jin Jian-Ce JC Li Wei-An WA Zeng Xi X Ma Wen W Li Ji-Long JL Lv Tian-Tian TT Peng Ying-Chen YC Feng Mei-Ling ML Huang Xiao-Ying XY

Nature communications 20220203 1

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) ...[more]

PMID: 35115493

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