Differential cyclic voltammetry for selective and amplified detection

M.J.J. van Megen, Mathieu Odijk, Justyna Wiedemair, Wouter Olthuis, Albert van den Berg

    Research output: Contribution to journalArticleAcademicpeer-review

    6 Citations (Scopus)

    Abstract

    We propose to combine two existing electrochemical techniques, cyclic voltammetry (CV) and redox cycling (RC), in order to obtain amplified and selective detection of redox active species. This combination is achieved by applying CV waveforms to two electrodes spaced 1.20 mu m apart, with one of the electrodes at a constant potential offset compared to the other. Due to this potential offset we have named this technique differential cyclic voltammetry (DCV). Analytical expressions for the DCV voltammogram are derived and an optimal potential offset is calculated. The optimal voltage difference for the trade-off between peak height and width is 0.1 V for redox couples with n = 1. Experimental voltammograms show good agreement with the analytical expressions. The voltammogram for ferrocenedimethanol has been fitted (R-2 = 0.9985) using only the distance between the electrodes as fitting parameter. Therefore, this technique shows promise as a tool for amplified and selective detection of redox active species.
    Original languageUndefined
    Pages (from-to)6-10
    Number of pages5
    JournalJournal of electroanalytical chemistry
    Volume681
    DOIs
    Publication statusPublished - 1 Aug 2012

    Keywords

    • Thin layer cells
    • EWI-22314
    • METIS-289718
    • Redox Cycling
    • Cyclic voltammetry
    • SECM
    • IR-81910

    Cite this

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    title = "Differential cyclic voltammetry for selective and amplified detection",
    abstract = "We propose to combine two existing electrochemical techniques, cyclic voltammetry (CV) and redox cycling (RC), in order to obtain amplified and selective detection of redox active species. This combination is achieved by applying CV waveforms to two electrodes spaced 1.20 mu m apart, with one of the electrodes at a constant potential offset compared to the other. Due to this potential offset we have named this technique differential cyclic voltammetry (DCV). Analytical expressions for the DCV voltammogram are derived and an optimal potential offset is calculated. The optimal voltage difference for the trade-off between peak height and width is 0.1 V for redox couples with n = 1. Experimental voltammograms show good agreement with the analytical expressions. The voltammogram for ferrocenedimethanol has been fitted (R-2 = 0.9985) using only the distance between the electrodes as fitting parameter. Therefore, this technique shows promise as a tool for amplified and selective detection of redox active species.",
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    author = "{van Megen}, M.J.J. and Mathieu Odijk and Justyna Wiedemair and Wouter Olthuis and {van den Berg}, Albert",
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    language = "Undefined",
    volume = "681",
    pages = "6--10",
    journal = "Journal of electroanalytical chemistry",
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    Differential cyclic voltammetry for selective and amplified detection. / van Megen, M.J.J.; Odijk, Mathieu; Wiedemair, Justyna; Olthuis, Wouter; van den Berg, Albert.

    In: Journal of electroanalytical chemistry, Vol. 681, 01.08.2012, p. 6-10.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Differential cyclic voltammetry for selective and amplified detection

    AU - van Megen, M.J.J.

    AU - Odijk, Mathieu

    AU - Wiedemair, Justyna

    AU - Olthuis, Wouter

    AU - van den Berg, Albert

    N1 - eemcs-eprint-22314

    PY - 2012/8/1

    Y1 - 2012/8/1

    N2 - We propose to combine two existing electrochemical techniques, cyclic voltammetry (CV) and redox cycling (RC), in order to obtain amplified and selective detection of redox active species. This combination is achieved by applying CV waveforms to two electrodes spaced 1.20 mu m apart, with one of the electrodes at a constant potential offset compared to the other. Due to this potential offset we have named this technique differential cyclic voltammetry (DCV). Analytical expressions for the DCV voltammogram are derived and an optimal potential offset is calculated. The optimal voltage difference for the trade-off between peak height and width is 0.1 V for redox couples with n = 1. Experimental voltammograms show good agreement with the analytical expressions. The voltammogram for ferrocenedimethanol has been fitted (R-2 = 0.9985) using only the distance between the electrodes as fitting parameter. Therefore, this technique shows promise as a tool for amplified and selective detection of redox active species.

    AB - We propose to combine two existing electrochemical techniques, cyclic voltammetry (CV) and redox cycling (RC), in order to obtain amplified and selective detection of redox active species. This combination is achieved by applying CV waveforms to two electrodes spaced 1.20 mu m apart, with one of the electrodes at a constant potential offset compared to the other. Due to this potential offset we have named this technique differential cyclic voltammetry (DCV). Analytical expressions for the DCV voltammogram are derived and an optimal potential offset is calculated. The optimal voltage difference for the trade-off between peak height and width is 0.1 V for redox couples with n = 1. Experimental voltammograms show good agreement with the analytical expressions. The voltammogram for ferrocenedimethanol has been fitted (R-2 = 0.9985) using only the distance between the electrodes as fitting parameter. Therefore, this technique shows promise as a tool for amplified and selective detection of redox active species.

    KW - Thin layer cells

    KW - EWI-22314

    KW - METIS-289718

    KW - Redox Cycling

    KW - Cyclic voltammetry

    KW - SECM

    KW - IR-81910

    U2 - 10.1016/j.jelechem.2012.05.021

    DO - 10.1016/j.jelechem.2012.05.021

    M3 - Article

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    EP - 10

    JO - Journal of electroanalytical chemistry

    JF - Journal of electroanalytical chemistry

    SN - 0368-1874

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