Abstract
This work fabricated a novel two-dimensional (2D) amidoxime-functionalized covalent organic framework (COF) (named HDU-102-AO) for U(VI) extraction. It had a spiny rod structure, high crystallinity, appreciable specific surface area, excellent pore size structure and exceptional stability. Batch experiments demonstrated HDU-102-AO had an impressive capacity for adsorbing uranyl ions, up to 389.08 mg g−1. It maintained a high adsorption ability at a wide pH range, with an ultra-high selectivity toward interfering ions. In summary, HDU-102-AO with excellent stability and adsorption performance, provided a practicable way for COF preparation, and could be served as a potential adsorbent for uranium adsorption.
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The work was financially supported by National Natural Science Foundation of China (11875028).
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Wang, C., Xi, W., Guo, R. et al. A novel amidoxime-functionalized covalent organic framework for removal of U(VI) from uranium-containing wastewater with appreciable efficiency and selectivity. J Radioanal Nucl Chem 331, 2469–2478 (2022). https://doi.org/10.1007/s10967-022-08294-1
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DOI: https://doi.org/10.1007/s10967-022-08294-1