Mechanism of formation of polypyrrole on a Pt electrode from aqueous solutions

A coherent explanation for the polypyrrole tridimensional growth on a Pt surface has been found. Two different potential ranges were studied on which the reaction mechanism changes. The results are not in disagreement with an instantaneous tridimensional nucleation [see, S. Asavapiriyanont, G. K. Ch...

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Bibliographic Details
Published in:Electrochimica acta 1987-10, Vol.32 (10), p.1453-1459
Main Authors: Marcos, M.L., Rodriguez, I., González-Velasco, J.
Format: Article
Language:English
Subjects:
Adsorption
Chemistry
Electrochemistry
Electrodeposition
Exact sciences and technology
General and physical chemistry
Study of interfaces
Transport phenomena
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Summary:A coherent explanation for the polypyrrole tridimensional growth on a Pt surface has been found. Two different potential ranges were studied on which the reaction mechanism changes. The results are not in disagreement with an instantaneous tridimensional nucleation [see, S. Asavapiriyanont, G. K. Chandler, G. A. Gunawardena and D. Pletcher, J. electronal. Chem. 177, 229 (1984)] but do not show any pH dependence, from which a loss of H + by the pyrrole monomers could be deduced.
ISSN:0013-4686
1873-3859
DOI:10.1016/0013-4686(87)85085-5