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Efficient and selective capture of thorium ions by a covalent organic framework

Author

Listed:
  • Xiaojuan Liu

    (China Institute of Atomic Energy)

  • Feng Gao

    (China Institute of Atomic Energy)

  • Tiantian Jin

    (China Institute of Atomic Energy)

  • Ke Ma

    (China Institute of Atomic Energy)

  • Haijiang Shi

    (China Institute of Atomic Energy)

  • Ming Wang

    (Hainan University)

  • Yanan Gao

    (Hainan University)

  • Wenjuan Xue

    (Tiangong University)

  • Jing Zhao

    (China Institute of Atomic Energy)

  • Songtao Xiao

    (China Institute of Atomic Energy)

  • Yinggen Ouyang

    (China Institute of Atomic Energy)

  • Guoan Ye

    (China Institute of Atomic Energy)

Abstract

The selective separation of thorium from rare earth elements and uranium is a critical part of the development and application of thorium nuclear energy in the future. To better understand the role of different N sites on the selective capture of Th(IV), we design an ionic COF named Py-TFImI-25 COF and its deionization analog named Py-TFIm-25 COF, both of which exhibit record-high separation factors ranging from 102 to 105. Py-TFIm-25 COF exhibits a significantly higher Th(IV) uptake capacity and adsorption rate than Py-TFImI-25 COF, which also outperforms the majority of previously reported adsorbents. The selective capture of Py-TFImI-25 COF and Py-TFIm-25 COF on thorium is via Th-N coordination interaction. The prioritization of Th(IV) binding at different N sites and the mechanism of selective coordination are then investigated. This work provides an in-depth insight into the relationship between structure and performance, which can provide positive feedback on the design of novel adsorbents for this field.

Suggested Citation

  • Xiaojuan Liu & Feng Gao & Tiantian Jin & Ke Ma & Haijiang Shi & Ming Wang & Yanan Gao & Wenjuan Xue & Jing Zhao & Songtao Xiao & Yinggen Ouyang & Guoan Ye, 2023. "Efficient and selective capture of thorium ions by a covalent organic framework," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40704-0
    DOI: 10.1038/s41467-023-40704-0
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    Cited by:

    1. Ningning He & Yingdi Zou & Cheng Chen & Minghao Tan & Yingdan Zhang & Xiaofeng Li & Zhimin Jia & Jie Zhang & Honghan Long & Haiyue Peng & Kaifu Yu & Bo Jiang & Ziqian Han & Ning Liu & Yang Li & Lijian, 2024. "Constructing ordered and tunable extrinsic porosity in covalent organic frameworks via water-mediated soft-template strategy," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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