Determination of Kinetic Parameters from Steady-State Microdisk Voltammograms
Abstract
Equations are derived for the voltammetric response of an irreversible system in the steady-state regime at a small electrode. Voltammetric data for oxidation of Fe(II) in 0.1 M H2SO4 at circular platinum electrodes of radius 5 and 12.5 micro are analyzed by a semilogarithmic technique and by reciprocal plots analogous to treatments of rotating disk voltammograms. The resulting values of kinetic parameters are standard rate constant ks = (1.5 + or - 0.2) X .01 cm/s and anodic transfer coefficient (1- alpha) = 0.67 + or - 0.01. This technique compares favorably with others for determining rate parameters in the same range by virtue of technical and mathematical simplicity. Keywords: Microelectrodes, Electrochemical kinetics, Iron, Steady state, Reprints.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA196652
Entities
People
- J. Golas
- Janet Osteryoun
- Z. Galus
Organizations
- University at Buffalo