Stability of Prussian Blue films on ITO electrode. Effect of different anions
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Other documents of the author: Roig-Navarro, Antoni F.; Navarro, J.; Tamarit, R.; Vicente, F.
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comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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http://dx.doi.org/10.1016/0022-0728(93)87004-F |
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Title
Stability of Prussian Blue films on ITO electrode. Effect of different anionsDate
1993-02Publisher
ElsevierBibliographic citation
ROIG, A., et al. Stability of Prussian Blue films on ITO electrodes: effect of different anions. Journal of Electroanalytical Chemistry, 1993, vol. 360, no 1, p. 55-69.Type
info:eu-repo/semantics/articlePublisher version
http://www.sciencedirect.com/science/article/pii/002207289387004FVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
Transformation of insoluble newly deposited Prussian Blue (PB) into the soluble structure stabilizes the film and allows its total oxidation to Prussian Yellow. The stability of PB films in electrochemical processes ... [+]
Transformation of insoluble newly deposited Prussian Blue (PB) into the soluble structure stabilizes the film and allows its total oxidation to Prussian Yellow. The stability of PB films in electrochemical processes in successive potential cycling experiments and under long-term chemical attack by an electrolyte depends not only on the cation that takes part but also on the nature of the anion present. In aqueous media, the sulphate ion clearly destabilizes the crystalline structure whereas the nitrate ion favours stabilization. Initial changes in the voltammograms recorded immediately after the spectroscopic tests have been detected in all media. During the immersion period water molecules and ions enter the film and affect the redox processes. With time the ions arrange themselves in the heart of the lattice and the water molecules are lost, and the blocking of the redox processes disappears. [-]
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Journal of Electroanalytical Chemistry Volume 360, Issues 1–2, November 1993Rights
Copyright © 1993 Published by Elsevier B.V.
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