Abstract
A new magnetic nanocomposite material, magnetic 18-crown-6/Fe3O4 nanocomposite (MCFN), was prepared for the removal of U(VI) from aqueous solution. The MCFN was composed of Fe3O4 nanoparticales modified by covalent attachment of 18-crown-6, which can help the material to be removed easily from solution by magnetic force. As a new adsorbent for U(VI) removal, MCFN was characterized by infrared radiation, scanning electron microscopy with energy dispersive X-ray spectroscopy, vibrating sample magnetometer and thermal gravimetric analysis. Those factors affecting the sorption behavior of U(VI), such as acidity, temperature, initial concentration of U(VI) and the amount of crown ethers were studied by orthogonal experiments. A maximum U(VI) sorption capacity of 91.12 mg g−1 was achieved at 45 °C, pH 5.5 for 30 min. The experimental results showed that MCFN had great sorption capacity, high selectivity and strong potentiality of enrichment and recovery for U(VI). In summary, MCFN is a promising candidate for U(VI) separation in future practical applications.
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Acknowledgments
This research was sponsored by Hunan Provincial Natural Science Foundation of China (No. 12JJ6014), the Department of Science and Technology of Hunan Province (No. 2012SK3154), the Graduate Student Research and Innovation Program of Hunan Province, China (No. CX2011B372), the Construct Program of the Key Discipline in Hunan Province.
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Le Li and Fen Huang contributed equally to this study and should be considered co-first authors.
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Li, L., Huang, F., Yuan, Y. et al. Preparation and sorption performance of magnetic 18-crown-6/Fe3O4 nanocomposite for uranium(VI) in solution. J Radioanal Nucl Chem 298, 227–235 (2013). https://doi.org/10.1007/s10967-013-2443-9
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DOI: https://doi.org/10.1007/s10967-013-2443-9