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Ion-exchange materials

Seizing the caesium

Public acceptance of the expansion of nuclear power may hinge on the safe disposal of nuclear waste. Ion exchangers that remove radioactive metals — such as caesium ions — from the waste could provide part of the answer, so a flexible-framework material that selectively grab them from solution is a step in the right direction.

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Figure 1: Schematic of the cation sites in the layered compound [(CH3)2NH2][Ga2Sb2S7].

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Clearfield, A. Seizing the caesium. Nature Chem 2, 161–162 (2010). https://doi.org/10.1038/nchem.567

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