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    A novel electrochemical sensor based on calixarene functionalized reduced graphene oxide: Application to simultaneous determination of Fe(III), Cd(II) and Pb(II) ions

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    Fulltext not available
    Authors
    Göde, C.
    Yola, M.
    Yilmaz, A.
    Atar, N.
    Wang, Shaobin
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Göde, C. and Yola, M. and Yilmaz, A. and Atar, N. and Wang, S. 2017. A novel electrochemical sensor based on calixarene functionalized reduced graphene oxide: Application to simultaneous determination of Fe(III), Cd(II) and Pb(II) ions. Journal of Colloid and Interface Science. 508: pp. 525-531.
    Source Title
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2017.08.086
    ISSN
    0021-9797
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/62969
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier Inc. A glassy carbon electrode (GCE) modified by calixarene functionalized reduced graphene oxide (CA/RGO) has been fabricated and utilized in this study for simultaneous voltammetric detection of several metal ions, Fe(II), Cd(II) and Pb(II), in aqueous solution. The CA/RGO nanocomposite was characterized in surface and electrochemical properties using scanning electron microscopy (SEM), infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), Raman spectroscopy and electrochemical impedance spectroscopy (EIS). The CA/RGO coating significantly improves the sensitivity of electrochemical responses and separation of heavy metals. The electrochemical oxidation of Fe(III), Cd(II), and Pb(II) was performed by square wave voltammetry (SWV). The metal ions, Fe(III), Cd(II), and Pb(II), gave a linear relationship with their concentrations at 1.0 × 10 -10 – 1.0 × 10 -8 M on the CA/RGO/GCE. The detection limits of the metal ions were found to be similar at 2.0 × 10 -11 M. A good recovery was also obtained for practical use of the CA/RGO/GCE in pharmaceutical formulation.

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