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Seawater Sampling and Collection
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Self-Assembly Approach for Uranium Extraction from Seawater.

Feng Gao1, Xianqing Xie2, Feng Luo1

  • 1State Key Laboratory of Nuclear Resources and Environment, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China.

Inorganic Chemistry
|February 3, 2026
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Summary
This summary is machine-generated.

This study introduces a novel self-assembly method for efficient uranium extraction from seawater. The approach creates precise uranium-binding sites, achieving high selectivity and uptake from natural seawater.

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Area of Science:

  • Materials Science
  • Chemistry
  • Environmental Science

Background:

  • Efficient uranium extraction from seawater is challenging due to the lack of specific binding sites on adsorbents.
  • Current methods struggle with precise targeting of uranium ions in complex marine environments.

Purpose of the Study:

  • To develop a novel in situ self-assembly approach for creating precise uranium-identified sites.
  • To enhance uranium selectivity and uptake efficiency from natural seawater.

Main Methods:

  • Utilized in situ self-assembly of 2,6-pyridinedicarboxaldehyde and terephthalohydrazide.
  • Employed covalent Schiff base condensation and coordination with UO22+ ions.
  • Integrated [UO2(CO3)3]4- composite anions into the self-assembly process.

Main Results:

  • Achieved a record uranium selectivity over vanadium (SU/V = 600).
  • Demonstrated a high uranium uptake capacity of 16.91 mg/g from natural seawater within 7 days.
  • Successfully created a precise UO22+-identified site through the self-assembly mechanism.

Conclusions:

  • The novel in situ self-assembly approach offers an efficient and convenient method for uranium extraction.
  • This technique significantly improves uranium selectivity and uptake, addressing key challenges in seawater uranium recovery.
  • The developed adsorbent shows great potential for practical applications in sustainable energy and resource management.