Electroplating of palladium on a HOPG electrode in ammoniacal solutions
Keywords:
Palladium, Cluster, Electrodeposition, Kinetic, Nucleation
Abstract
In the present work we have carried out a kinetic and morphological study of the palladium electrodeposition onto highly oriented pirolytic graphite electrode from an aqueous solution [0.001 M PdCl2 + 1 M NH4Cl (pH=7)]. From the potentiostatic study were calculated the diffusion coefficient (1.21x10-6 cm2 s-1), the number of active nucleation sites (N0), the nucleation rate (A) and the rate constant of the proton reduction process (kPR). A, N0 and kPR values were potential dependent and they increased with an augment in the applied overpotential. At higher overpotential, it is possible to induce the formation of small Pd clusters with 5 nm in height and an average size of 20–30 nm in diameter.
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References
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2. RISE C., HA S., MASEL R. I., WIECKOWSKI. A. Journal of Power Source, 2003, p.115, 229.
3. JEON S.Y., IM H.N., LIM J.S., Wachsman E. D., SONG S. J. Ionics, 2013, p. 19, 171.
4. KAPOOR M. P., RAJ A., MATSUMURA Y. Microporous and Mesoporous Material, 2001, p. 44-45, 565.
5. ZHANG M., CHENG F. CAI, Z., YAO H. Int. J. Electrochem. Sci., 2010, 5, p. 1026.
6. YANG D., CARPENA-NÚÑEZ J., FONSECA L.F., BIAGGI-LABIOSA A., HUNTER G. W. Scientific Reports, 2014.
7. NOH J., LEE J. M., LEE W. Sensors, 2011, p.11, 825.
8. MENDOZA-HUIZAR L. H., GARRIDO-MÁRQUEZ D., RÍOS-REYES C. H., RIVERA M., GARCÍA-SÁNCHEZ E., GALÁN-VIDAL C. J. Clust. Sci., 2015, p. 26, 337.
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Published
2015-09-01
How to Cite
Garrido Márquez, D., & Mendoza-Huizar, L. (2015). Electroplating of palladium on a HOPG electrode in ammoniacal solutions. Tópicos De Investigación En Ciencias De La Tierra Y Materiales, 2(2), 144-153. https://doi.org/10.29057/aactm.v2i2.9864
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Articles
