Synthesis and Characterization of a New Polymer-Based Supramolecular Recognition Material and its Adsorption for Cesium |
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| Authors: | Chengliang Xiao Zhifang Chai |
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| Affiliation: | 1. Department of Chemical and Biochemical Engineering , Zhejiang University , Hangzhou , P.R. China;2. Department of Chemical and Biochemical Engineering , Zhejiang University , Hangzhou , P.R. China;3. Laboratory of Nuclear Analytical Techniques , Institute of High Energy Physics, Chinese Academy of Sciences , Beijing , P.R. China |
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| Abstract: | A novel macroporous polymer-based 25,27-bis(iso-propyloxy)calix4]arene-26,28-crown-6 (BiPCalix4]C6) supramolecular recognition material, BiPCalix4]C6/XAD-7, was synthesized. It was performed by vacuum impregnation and immobilization of BiPCalix4]C6 into the pores of the macroporous XAD-7 particles. The composition and structure were characterized using SEM, BET, TG-DSC, FT-IR, and XRD, respectively. The adsorption of some typical metals contained in highly active liquid waste (HLW) such as Ru(III), Mo(VI), K(I), Rb(I), Cs(I), Sr(II), Ba(II), La(III), and Y(III) onto the BiPCalix4]C6/XAD-7 materials was investigated. The effects of the HNO3 concentration and contact time on the adsorption of the tested metals were evaluated. It was found that at the optimum concentration of 4.0 M HNO3, BiPCalix4]C6/XAD-7 exhibited excellent adsorption ability and high selectivity for Cs(I) over all the other tested metals, which showed weak or almost no adsorption except Rb(I). It demonstrated that application of the polymer-based supramolecular recognition material, BiPCalix4]C6/XAD-7, in partitioning of Cs(I) from HLW is promising. |
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| Keywords: | Supramolecular recognition materials polymer-based support Calix[4]arene-crown adsorption cesium |
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