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Effective and rapid adsorption of uranium via synergy of complexation and cation-π interaction

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Abstract

A novel indole-based aerogel (HTPRA) containing carboxyl groups was prepared for separation of uranium from aqueous solution. The adsorption was rapid, strongly dependent on pH, attaining a plateau at pH 4–7.5 and independent of ionic strength. The maximum adsorption capacity of HTPRA for uranium was evaluated to be 899.9 mg g−1. HTPRA exhibited satisfactory performance in actual water samples. Furthermore, the resulting HTPRA could be recovered at least five times without marked deterioration in uptake capacity. The synergistic effect of complexation and cation-π interaction between HTPRA and uranium was responsible for the unexpected adsorption capacity of uranium.

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Acknowledgements

This work was financially supported by the Scientific Research Start-up Project of Mianyang Teachers’ College (QD2015A001, QD2021A15 and MYSY2018T004).

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  1. School of Mathematics and Physics, Mianyang Teachers’ College, Mianyang, 621000, People’s Republic of China

    Yan Wang, Xiaolin Liu, Yingrong Xie & Bowei Chen

  2. State Key Laboratory of Environmental-Friendly Energy Materials and School of National Defence Science and Technology and School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Yong Zhang

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Wang, Y., Liu, X., Xie, Y. et al. Effective and rapid adsorption of uranium via synergy of complexation and cation-π interaction. J Radioanal Nucl Chem 331, 1115–1126 (2022). https://doi.org/10.1007/s10967-021-08179-9

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