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The efficient immobilization of uranium(VI) by modified dendritic fibrous nanosilica (DFNS) using mussel bioglue

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Abstract

Herein, a dendritic fibrous nanosilica (DFNS)-based adsorbent was constructed through bio-inspired bifunctional stimulation as a rapid and efficient trap for uranium(VI). Amino-amidoxime bifunctional polyacrylonitrile (AOPNI-NH2) firmly adhered to the DFNS substrate through the polymerization of mussel-inspired dopamine (DA) with a large amount of amine and carbonyl groups. Meanwhile, the amine group of the introduced AOPNI-NH2 not only suppressed the ring-closing reaction of amidoxime groups to increase the active sites, but also improved their adsorption rate. The adsorption amount of U(VI) on as-prepared DFNS/pDA/AOPNI-NH2 reached qm = 678 mg g−1, which represented a 118% increase compared with the original DFNS under the same conditions. Finally, the adsorption capacity demonstrated the potential for the application of this adsorbent in a seawater environment.

Graphical abstract: The efficient immobilization of uranium(vi) by modified dendritic fibrous nanosilica (DFNS) using mussel bioglue

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Publication details

The article was received on 15 Dec 2018, accepted on 28 Jan 2019 and first published on 29 Jan 2019


Article type: Research Article
DOI: 10.1039/C8QI01351A
Citation: Inorg. Chem. Front., 2019, Advance Article

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    The efficient immobilization of uranium(VI) by modified dendritic fibrous nanosilica (DFNS) using mussel bioglue

    P. Yang, R. Chen, Q. Liu, H. Zhang, J. Liu, J. Yu, P. Liu, X. Bai and J. Wang, Inorg. Chem. Front., 2019, Advance Article , DOI: 10.1039/C8QI01351A

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