Stripping voltammetry of bismuth at Au(111): Mathematical modelling and numerical simulation

The electrodeposition of bismuth on a gold electrode consists of an underpotential deposition (UPD) and an overpotential deposition (OPD) of bulk bismuth which follows nucleation on the UPD. Mathematical modelling and numerical simulations have been compared with experimental data to propose a mecha...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2008-05, Vol.616 (1-2), p.38-44
Main Authors: Ward Jones, Sarah E., Zheng, Susan H., Jeffrey, Craig A., Seretis, Spiros, Morin, Sylvie, Compton, Richard G.
Format: Article
Language:English
Subjects:
Anodic stripping voltammetry
Bismuth
Bismuth films
Chemistry
Electrochemistry
Electrodeposition
Exact sciences and technology
General and physical chemistry
Mathematical modelling
Numerical simulation
Study of interfaces
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Summary:The electrodeposition of bismuth on a gold electrode consists of an underpotential deposition (UPD) and an overpotential deposition (OPD) of bulk bismuth which follows nucleation on the UPD. Mathematical modelling and numerical simulations have been compared with experimental data to propose a mechanism for the deposition and stripping of bulk bismuth on a Au(111) electrode from a 1mM Bi3+/0.1M HClO4 solution. This mechanism has first order kinetics with respect to the concentration of Bi3+ and a chemical rate determining step that likely involves the change in solvation of a Bi+ intermediate.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2008.01.003