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    Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier

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    Author
    Hanada, T; Firmansyah, ML; Yoshida, W; Kubota, F; Kolev, SD; Goto, M
    Date
    2020-06-09
    Source Title
    ACS Omega
    Publisher
    AMER CHEMICAL SOC
    University of Melbourne Author/s
    Kolev, Spas
    Affiliation
    School of Chemistry
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Hanada, T., Firmansyah, M. L., Yoshida, W., Kubota, F., Kolev, S. D. & Goto, M. (2020). Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier. ACS OMEGA, 5 (22), pp.12989-12995. https://doi.org/10.1021/acsomega.0c00867.
    Access Status
    Access this item via the Open Access location
    URI
    http://hdl.handle.net/11343/254222
    DOI
    10.1021/acsomega.0c00867
    Open Access URL
    http://doi.org/10.1021/acsomega.0c00867
    Abstract
    Efficient and selective transport of rhodium(III) across a polymer inclusion membrane (PIM) from a 0.1 mol dm-3 HCl feed solution, also containing iron(III), to a receiving solution containing 0.1 mol dm-3 HCl and 4.9 mol dm-3 NH4Cl was achieved using a phosphonium-type ionic liquid, trioctyl(dodecyl)phosphonium chloride (P88812Cl), as the metal ion carrier. The optimum PIM composition for the Rh(III) transport was 50 wt % poly(vinylidene-co-hexafluoropropylene) (PVDF-HFP), 30 wt % P88812Cl, and 20 wt % plasticizer 2-nitrophenyl octyl ether (2NPOE). The driving force for the Rh(III) transport was suggested to be the concentration difference of the chloride ion between the feed and the receiving solutions. More than 70% rhodium(III) could be recovered from the receiving solution, and no transport of iron(III) was observed; however, the two metal ions cannot be separated by liquid-liquid extraction. This is the first report of selective transport of rhodium(III) across a polymer inclusion membrane.

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