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A hydrolytically stable anionic layered indium–organic framework for the efficient removal of 90Sr from seawater

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Abstract

Efficient removal of radioactive 90Sr from nuclear waste solutions and natural water systems is of vital importance due to its radioactive nature and high mobility. We present here an anionic layered compound (NC4H12)(NC2H8)2[In3(pydc)6]·13.1H2O (SZ-6; pydc = 2,5-pyridinedicarboxylic acid) with the potential remediation ability towards radioactive Sr2+ from seawater. This material exhibits excellent β and γ radiation resistance both in air and in aqueous solutions. Besides, this material could maintain its structural integrity in real seawater for 77 days. The adsorption experiment results show that SZ-6 exhibits superior Sr2+ removal capability over a wide pH range from 4 to 12 with fast adsorption kinetics and high selectivity. The effective removal of 90Sr from real seawater was demonstrated as well. Our results strongly suggest the potential application of SZ-6 for selectively capturing radionuclides in natural water systems.

Graphical abstract: A hydrolytically stable anionic layered indium–organic framework for the efficient removal of 90Sr from seawater

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Publication details

The article was received on 30 Jul 2019, accepted on 15 Nov 2019 and first published on 28 Nov 2019


Article type: Paper
DOI: 10.1039/C9DT03112J
Dalton Trans., 2019, Advance Article

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    A hydrolytically stable anionic layered indium–organic framework for the efficient removal of 90Sr from seawater

    G. Li, G. Ji, W. Liu, J. Zhang, L. Song, L. Cheng, X. Wang, Y. Wang, J. Liu, X. Chen, X. Sun and J. Diwu, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT03112J

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