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    Physical Removal of Anions from Aqueous Media by Means of a Macrocycle-Containing Polymeric Network

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    Type
    Article
    Authors
    Ji, Xiaofan
    Wu, Ren-Tsung
    Long, Lingliang cc
    Guo, Chenxing
    Khashab, Niveen M. cc
    Huang, Feihe cc
    Sessler, Jonathan L. cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Smart Hybrid Materials (SHMs) lab
    Date
    2018-02-19
    Online Publication Date
    2018-02-19
    Print Publication Date
    2018-02-28
    Permanent link to this record
    http://hdl.handle.net/10754/627273
    
    Metadata
    Show full item record
    Abstract
    Reported here is a hydrogel-forming polymer network that contains a water-soluble tetracationic macrocycle. Upon immersion of this polymer network in aqueous solutions containing various inorganic and organic salts, changes in the physical properties are observed that are consistent with absorption of the constituent anions into the polymer network. This absorption is ascribed to host-guest interactions involving the tetracationic macrocyclic receptor. Removal of the anions may then be achieved by lifting the resulting hydrogels out of the aqueous phase. Treating the anion-containing hydrogels with dilute HCl leads to the protonation-induced release of the bound anions. This allows the hydrogels to be recycled for reuse. The present polymer network thus provides a potentially attractive approach to removing undesired anions from aqueous environments.
    Citation
    Ji X, Wu R-T, Long L, Guo C, Khashab NM, et al. (2018) Physical Removal of Anions from Aqueous Media by Means of a Macrocycle-Containing Polymeric Network. Journal of the American Chemical Society 140: 2777–2780. Available: http://dx.doi.org/10.1021/jacs.7b13656.
    Sponsors
    The American Chemical Society Petroleum Research Fund (Grant No. 56925-ND7 to J.L.S.), the Robert A. Welch Foundation (F-0018 to J.L.S.), the National Basic Research Program (2013CB834502 to F.H.), the NSFC/China (91527301, 21434005 to F.H.), and the collaborative research grant (CRG 6 to N.M.K.) of King Abdullah University of Science and Technology are acknowledged for financial support.
    Publisher
    American Chemical Society (ACS)
    Journal
    Journal of the American Chemical Society
    DOI
    10.1021/jacs.7b13656
    PubMed ID
    29437394
    Additional Links
    https://pubs.acs.org/doi/full/10.1021/jacs.7b13656
    ae974a485f413a2113503eed53cd6c53
    10.1021/jacs.7b13656
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Controlled Release and Delivery Laboratory; Chemical Science Program

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