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DNA nano-pocket for ultra-selective uranyl extraction from seawater

Author

Listed:
  • Yihui Yuan

    (Hainan University)

  • Tingting Liu

    (Hainan University)

  • Juanxiu Xiao

    (Hainan University)

  • Qiuhan Yu

    (Hainan University)

  • Lijuan Feng

    (Hainan University)

  • Biye Niu

    (Hainan University)

  • Shiwei Feng

    (Hainan University)

  • Jiacheng Zhang

    (Hainan University)

  • Ning Wang

    (Hainan University)

Abstract

Extraction of uranium from seawater is critical for the sustainable development of nuclear energy. However, the currently available uranium adsorbents are hampered by co-existing metal ion interference. DNAzymes exhibit high selectivity to specific metal ions, yet there is no DNA-based adsorbent for extraction of soluble minerals from seawater. Herein, the uranyl-binding DNA strand from the DNAzyme is polymerized into DNA-based uranium extraction hydrogel (DNA-UEH) that exhibits a high uranium adsorption capacity of 6.06 mg g−1 with 18.95 times high selectivity for uranium against vanadium in natural seawater. The uranium is found to be bound by oxygen atoms from the phosphate groups and the carbonyl groups, which formed the specific nano-pocket that empowers DNA-UEH with high selectivity and high binding affinity. This study both provides an adsorbent for uranium extraction from seawater and broadens the application of DNA for being used in recovery of high-value soluble minerals from seawater.

Suggested Citation

  • Yihui Yuan & Tingting Liu & Juanxiu Xiao & Qiuhan Yu & Lijuan Feng & Biye Niu & Shiwei Feng & Jiacheng Zhang & Ning Wang, 2020. "DNA nano-pocket for ultra-selective uranyl extraction from seawater," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19419-z
    DOI: 10.1038/s41467-020-19419-z
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    Cited by:

    1. Peng Gao & Yezi Hu & Zewen Shen & Guixia Zhao & Ruiqing Cai & Feng Chu & Zhuoyu Ji & Xiangke Wang & Xiubing Huang, 2024. "Ultra-highly efficient enrichment of uranium from seawater via studtite nanodots growth-elution cycle," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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