Preprint

PUBDB-2025-05149

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Selective mineral recovery from seawater by ion-exchangeable metal-organic framework glasses

Mollick, S. ; Morgante, C. ; Christensen, A. K. R. ; Finkler, J. A. ; Youngman, R. E. ; Nielsen, A. B. ; Lu, R. ; Sørensen, S. S. ; Johansen, M. ; Karlsen, M. A.Extern*DESY* ; Stathopoulos, V. N. ; Lock, N. ; Nielsen, N. C. ; Boffa, V. (Corresponding author) ; Smedskjaer, M. M. (Corresponding author)Extern*

2025

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Please use a persistent id in citations: doi:10.26434/chemrxiv-2025-90l2h-v2  doi:10.3204/PUBDB-2025-05149

Abstract: The transition to clean energy and sustainable technologies necessitates securing precious metals, yet traditional land-based mining is increasingly unsustainable. Seawater holds immense potential as a mineral source, but its intricate ionic composition limits current extraction techniques. Here, we report a family of ion-exchangeable materials by grafting phosphate groups onto metal-organic framework glasses, followed by precise heat and aqueous treatments. This process introduces facile exchangeable ions and exposes active functional groups. Based on these structural features, the materials exhibit superior performance in selective recovery of magnesium and lithium from various natural seawater samples, surpassing a typical commercial resin in uptake rate, capacity, and recyclability. Our work presents a promising route for designing efficient adsorbents to extract valuable minerals from unconventional sources and help to secure the raw materials vital for a low-carbon future.

Note: We acknowledge the Deutsche Forschungsgemeinschaft (DFG) (withinthe SPP 2196: grant numbers GR 5505/3-1, RI 1551/15-2, RI 1551/12-2,RI1551/22-1, OL 462/4-2, OL 462/7-1, MA 2359/38-1 and HA 4382/16-1)and the Bundesministerium für Bildung und Forschung (BMBF) (grantnumber 01DP20008) for financial support.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. 05K19VTA - Entwicklung einer kompakten Probenumgebung mit Spin-Coater für in-situ Röntgenstreuung an PETRA III. (BMBF-05K19VTA) (BMBF-05K19VTA)
4. FOXES - Fully Oxide-based Zero-Emission and Portable Energy Supply (951774) (951774)
5. TRIUMPH - Triple junction solar modules based on perovskites and silicon for high performance, low-cost and small environmental footprint (101075725) (101075725)
6. FS-Proposal: I-20211642 (I-20211642) (I-20211642)
7. FS-Proposal: II-20190761 (II-20190761) (II-20190761)
8. FS-Proposal: I-20221269 (I-20221269) (I-20221269)

Experiment(s):

1. PETRA Beamline P08 (PETRA III)

Appears in the scientific report 2025

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