ArticleNature communications2025
Tuneable ion selectivity in vermiculite membranes intercalated with unexchangeable ions.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Sheet-Size-Dependent Mosaicity of 2D Phyllosilicate Membranes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Quantum Dots for Visible-Light-Driven Organic Transformations: a Chemist Perspective.Topics in current chemistry (Cham) · 2025Review
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Authors and funding
11 authors.
Funding
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Abstract
Membranes selective to ions of the same charge are increasingly sought for water waste processing and valuable element recovery. However, while narrow channels are known to be essential, other membrane parameters remain difficult to identify and control. Here we show that Zr⁴⁺, Sn⁴⁺, Ir⁴⁺, and La³⁺ ions intercalated into vermiculite laminate membranes become effectively unexchangeable, creating stable channels, one to two water layers wide, that exhibit robust and tuneable ion selectivity. Ion permeability in these membranes spans five orders of magnitude, following a trend dictated by the ions' Gibbs free energy of hydration. Unexpectedly, different intercalated ions lead to two distinct monovalent ion selectivity sequences, despite producing channels of identical width. The selectivity instead correlates with the membranes' stiffness and the entropy of hydration of the intercalated ions. These results introduce an ion selectivity mechanism driven by entropic and mechanical effects, beyond classical size and charge exclusion.
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Registered trials
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