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    A nitrogen-rich covalent organic framework for simultaneous dynamic capture of iodine and methyl iodide

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    1-s2.0-S2451929420306318-main.pdf
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    3.517Mb
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    Description:
    Accepted manuscript
    Embargo End Date:
    2021-12-01
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    Type
    Article
    Authors
    He, Linwei
    Chen, Long
    Dong, Xinglong cc
    Zhang, Shitong
    Zhang, Mingxing
    Dai, Xing
    Liu, Xiajie
    Lin, Peng
    Li, Kunfeng
    Chen, Cailing cc
    Pan, Tingting
    Ma, Fuyin
    Chen, Junchang
    Yuan, Mengjia
    Zhang, Yugang
    Chen, Lei
    Zhou, Ruhong
    Han, Yu cc
    Chai, Zhifang
    Wang, Shuao
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Physical Science and Engineering (PSE) Division
    Chemical Science
    Chemical Science Program
    Date
    2020-12
    Embargo End Date
    2021-12-01
    Submitted Date
    2020-05-02
    Permanent link to this record
    http://hdl.handle.net/10754/666911
    
    Metadata
    Show full item record
    Abstract
    The capture of radioiodine species during nuclear fuel reprocessing and nuclear accidents is crucial for nuclear safety, environmental protection, and public health. Previously reported emerging materials for iodine uptake cannot outperform commercial zeolites and active carbon under the practical dynamic scenario. Herein, we present a new design philosophy aiming at significantly enhanced specific host-guest interactions and obtain a nitrogen-rich covalent organic framework material by introducing a bipyridine group into the building block for the simultaneous capture of both iodine gas through enhanced electron-pair effect and organic iodide via the methylation reaction. These efforts give rise to not only an ultrahigh uptake capacity of 6.0 g g−1 for iodine gas and a record-high value of 1.45 g g−1 for methyl iodide under static sorption conditions but also, more importantly, a record-high iodine loading capability under dynamic conditions demonstrated from the breakthrough experiments.
    Citation
    He, L., Chen, L., Dong, X., Zhang, S., Zhang, M., Dai, X., … Wang, S. (2020). A nitrogen-rich covalent organic framework for simultaneous dynamic capture of iodine and methyl iodide. Chem. doi:10.1016/j.chempr.2020.11.024
    Sponsors
    This work was supported by grants from the National Natural Science Foundation of China (21825601, 21790374, 21806117, and 21906116) and the National Key R&D Program of China (2018YFB1900203). We thank Prof. Gang Zhou (Hubei University of Technology) as well as Prof. Wei Liu and Prof. Litao Kang (Yantai University) for their support in DFT calculations and Raman measurements, respectively. S.W. conceived and supervised the project; L.H. L.C. and M.Z. performed the synthesis and characterization of the COF material; L.H. X.D. X.L. P.L. and X.L. designed and carried out the static and dynamic adsorption experiments; S.Z. and X.D. performed the computational studies; L.H. F.M. J.C. L.C. and M.Y. carried out the BET analyses and XPS spectra analyses; Y.Z. and C.C. performed the electron microscopy test; T.P. performed the regeneration experiments; S.W. L.H. L.C. Y.H. and X.D. prepared the manuscript. All authors discussed the paper. The authors declare no competing interests.
    Publisher
    Elsevier BV
    Journal
    Chem
    DOI
    10.1016/j.chempr.2020.11.024
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S2451929420306318
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.chempr.2020.11.024
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Science Program

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