Hydrodynamic voltammetry at the interface between immiscible electrolyte solutions: Numerical simulation of the voltammetric response

Fran G E Jones, Robert A W Dryfe

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The current response for ion transfer across a polarised liquid-liquid interface under hydrodynamic conditions is presented via numerical solution of the relevant coupled two-phase transport equations. The liquid-liquid case can allow for asymmetric flow in either phase: a channel geometry is assumed and numerical solution achieved using implicit finite-difference methods. The response is simulated for chronoamperometry and cyclic voltammetry. The computed waveshapes for reversible, irreversible and quasi-reversible ion transfer are presented. The variation of the steady state current and half-wave potential with relative flow rates are explored and are compared with analytical theory where applicable. © 2007 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)25-33
    Number of pages8
    JournalJournal of Electroanalytical Chemistry
    Volume615
    Issue number1
    DOIs
    Publication statusPublished - 1 Apr 2008

    Keywords

    • Flow
    • Ion transfer
    • ITIES
    • Numerical simulation
    • Voltammetry

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