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      Highly selective adsorption of uranium in strong HNO 3 media achieved on a phosphonic acid functionalized nanoporous polymer

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          Abstract

          The competition between uranium and other metal ions is one of the greatest challenges for recovery of uranium in strong HNO 3 media.

          Abstract

          The competition between uranium and other metal ions is one of the greatest challenges for recovery of uranium in strong HNO 3 media. In this study, a novel nanoporous organic polymer adsorbent P(EGDMA-VPA) (POP-EDVP) was designed and synthesized by a solvothermal strategy, showing highly selective adsorption of uranium in strong HNO 3 media containing 16 co-existing cations. The outstanding selectivity ( S U = 94.2%) for the adsorption of uranium on the polymer is reasonably attributed to the presence of PO groups in the polymer skeleton, where the PO groups have a strong complexation with UO 2(NO 3) 2, as evidenced by their XPS results and supported by the density functional theory (DFT) calculation. Very importantly, the polymer shows a maximum adsorption capacity of uranium as high as 215.9 mg g −1 at 298 K in a 4 M HNO 3 solution. Even after recycling seven times, there is not any noticeable loss of its sorption capacity. This work shows a simple route to prepare a polymer adsorbent for highly selective adsorption of uranium in strong HNO 3 media, which is very significant for recovery of uranium in strongly acidic media.

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          Energy‐adjusted pseudopotentials for the actinides. Parameter sets and test calculations for thorium and thorium monoxide

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            Valence basis sets for relativistic energy-consistent small-core actinide pseudopotentials

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                Author and article information

                Contributors
                Journal
                JMCAET
                Journal of Materials Chemistry A
                J. Mater. Chem. A
                Royal Society of Chemistry (RSC)
                2050-7488
                2050-7496
                2017
                2017
                : 5
                : 43
                : 22735-22742
                Affiliations
                [1 ]Key Laboratory of Applied Chemistry of Zhejiang Province
                [2 ]Zhejiang University
                [3 ]Hangzhou 310028
                [4 ]China
                [5 ]Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices
                [6 ]East China University of Technology
                [7 ]Nanchang
                [8 ]College of Chemistry
                [9 ]Nanchang University
                [10 ]Nanchang 330031
                Article
                10.1039/C7TA07320H
                2fab9c24-070a-4bed-9377-9cf03cc009a4
                © 2017
                History

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