Ultraselective sequestration of Li+ and Mg2+ from brines via a reusable polyoxoniobate-based ion sponge

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00643366" target="_blank" >RIV/68378271:_____/25:00643366 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0374046" target="_blank" >https://hdl.handle.net/11104/0374046</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/sciadv.adz7696" target="_blank" >10.1126/sciadv.adz7696</a>

Result language
angličtina
Original language name
Ultraselective sequestration of Li+ and Mg2+ from brines via a reusable polyoxoniobate-based ion sponge
Original language description
Lithium (Li) and magnesium (Mg) are designated as critical mineral materials (CMM) due to their essential roles in clean energy technologies. However, extracting high-purity Li+ from brine remains a formidable challenge owing to the presence of Mg2+, a physicochemical similar ion that often exists in excess. Here, we introduce a polyoxoniobate-based “Mg-PONb sponge” that enables ultraselective and rapid Li+/Mg2+ separation across an exceptionally broad range of Mg/Li ratios (0.02 to 200.63). This framework achieves >99.9% Mg2+ removal with negligible Li+ loss in under 1 min, yielding Li+/Mg2+ selectivity values exceeding 5000. The sponge demonstrates excellent recyclability, maintaining >99% Mg2+ rejection and Li+ permeability across five regeneration cycles without structural degradation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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