A synergistic coordination-reduction interface for electrochemical reductive extraction of uranium with low impurities from seawater

Hongliang Guo, Enmin Hu, Yihao Wang, Zhenhong Ou, Bichu Huang, Jia Lei, Huanhuan Liu (), Rong He () and Wenkun Zhu ()
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Hongliang Guo: Southwest University of Science & Technology
Enmin Hu: Southwest University of Science & Technology
Yihao Wang: Southwest University of Science & Technology
Zhenhong Ou: Southwest University of Science & Technology
Bichu Huang: Southwest University of Science & Technology
Jia Lei: Southwest University of Science & Technology
Huanhuan Liu: Southwest University of Science & Technology
Rong He: Southwest University of Science & Technology
Wenkun Zhu: Southwest University of Science & Technology

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Electrochemical extraction of uranium from seawater is a promising strategy for the sustainable supply of nuclear fuel, whereas the current progress suffers from the co-deposition of impurities. Herein, we construct a synergistic coordination-reduction interface in CMOS@NSF, achieving electrochemical extraction of black UO2 product from seawater. The internal sulfur of CoMoOS tailors the electron distribution, resulting in the electron accumulation of terminal O sites for strong uranyl binding. Meanwhile, the interfacial connection of CoMoOS with Ni3S2 accelerates the electron transfer and promoted the reductive properties. Such synergistic coordination-reduction interface ensures the formation and preservation of tetravalent uranium, preventing the co-deposition of alkalis in crystalline transformation. From natural seawater, CMOS@NSF exhibits an electrochemical extraction capacity of 2.65 mg g−1 d−1 with black UO2 solid products as final products. This work provides an efficient strategy for the electrochemical uranium extraction from seawater with low impurities.

Date: 2025
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DOI: 10.1038/s41467-025-57113-0

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