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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus

IMPACT FACTOR 2018: 0.975
5-year IMPACT FACTOR: 1.021

CiteScore 2018: 1.20

SCImago Journal Rank (SJR) 2018: 0.327
Source Normalized Impact per Paper (SNIP) 2018: 0.391

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Volume 221, Issue 9-10


Potential Program Invariant Representation of Diffusion–Adsorption Related Voltammograms

Tamás Pajkossy
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/zpch.2007.221.9-10.1137

When adsorption and desorption are the only electrode processes on an electrode, the voltammetry curves are symmetric to the potential axis and the charge vs. potential curve exhibits no hysteresis, provided that the sweeprate and adsorbate concentration are sufficiently small and large, respectively. If the latter conditions do not hold, the adsorption process becomes diffusion-controlled, and the voltammograms become asymmetric. Assuming Langmuirian adsorption, a procedure employing a combination of integration and semiintegration of the measured current is suggested by which the effect of diffusion can be removed from the measured voltammograms. The procedure is supported by numerical simulations.

Keywords: Adsorption; Diffusion; Simulation; Data Processing; Semiintegration

About the article

Received: 2007-05-22

Accepted: 2007-07-23

Published Online: 2009-09-25

Published in Print: 2007-10-01

Citation Information: Zeitschrift für Physikalische Chemie, Volume 221, Issue 9-10, Pages 1137–1147, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1524/zpch.2007.221.9-10.1137.

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