Abstract
In this paper, an amidoximated polyorganophosphazene (PCCP-AO) adsorbent was concizely synthesized via poly(cyclotriphosphazene-co-polyethyleneimine) (PCCP) prepared from hexachlorocyclotriphosphazene (HCCP) and polyethyleneimine (PEI). PCCP and PCCP-AO were characterized by FTIR, SEM, BET and TGA. SEM images showed that both adsorbents had a morphorlogy of microsphere. The influences of pH values, contact times, initial U(VI) concentrations, temperatures and co-existing ions on the U(VI) adsorption properties of PCCP and PCCP-AO were studied. Data showed that PCCP and PCCP-AO exhibited high U(VI) adsorption capacities of 293.2 mg g−1 and 319.1 mg g−1 respectively. PCCP-AO has a higher adsorption capacity, a faster adsorption rate and a better U(VI) selectivity than PCCP. Besides, PCCP-AO exhibited good reusability.
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Acknowledgements
We appreciate the financial support from Sichuan Science and Technolgy Program (2019YJ0324) and the program of National Engineering Technology Center for Insulation Materials (kfjc03).
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Cui, M., Xiang, S., Zhang, S. et al. Amidoximated polyorganophosphazene microspheres with an excellent property of U(VI) adsorption in aqueous solution. J Radioanal Nucl Chem 328, 1161–1172 (2021). https://doi.org/10.1007/s10967-021-07744-6
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DOI: https://doi.org/10.1007/s10967-021-07744-6