Abstract
The development of efficient and reusable Sr2+ adsorbent materials holds great significance for nuclear energy development and environmental protection. In order to address the low crown ether content in crown ether-based solid-phase adsorbents, this study employed condensation polymerization using di(aminobenzo)-18-crown-6 as monomers to prepare polymer materials and porous membranes. The adsorption kinetics, adsorption isotherm, and recyclability of the crown ether-based polymer were comprehensively investigated for Sr2+ adsorption. The results showed that the adsorption behavior of the polymer towards Sr2+ followed a pseudo-first-order kinetic model and Langmuir adsorption model, with a maximum adsorption capacity of 4.6 mg/g. Furthermore, even after five cycles, the adsorption performance of the polymer material for Sr2+ showed no significant decline. This study provides a new perspective for the development of long-lasting and highly efficient Sr2+ adsorbent materials.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Grant No. 22208196), the China postdoctoral science foundation (Grant No. 2021M702014), Natural Science Foundation of Shandong Province, China (Grant No. ZR202111080133).
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Pei, H., Liu, J., Yue, M. et al. Investigation of the strontium (Sr(II)) adsorption of 18-crown-6 based polymer. J Radioanal Nucl Chem 332, 5051–5057 (2023). https://doi.org/10.1007/s10967-023-09163-1
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DOI: https://doi.org/10.1007/s10967-023-09163-1