Producción Científica Profesorado

A kinetic and AFM study of the Electrodeposition of Palladium Nanoclusters onto Highly Oriented Pyrolitic Graphite (HOPG).



Mendoza Huizar, Luis Humberto

2015

A kinetic and AFM study of the Electrodeposition of Palladium Nanoclusters onto Highly Oriented Pyrolitic Graphite (HOPG). L. H. Mendoza-Huizar, D. Garrido-Marquez, C.H. Rios-Reyes, M. Rivera, E. García-Sánchez, C. Galán-Vidal. Journal Cluster Science. 26, pp 337-346, 2015. DOI: 10.1007/s10876-014-0837-7Print ISSN 1040-7278, Online ISSN 1572-8862


Abstract


In the present work we have carried out a kinetic and morphological study of the palladium electrodeposition onto highly oriented pyrolitic graphite electrode from an aqueous solution [0.001 M PdCl2 + 1 M NH4Cl (pH 7)]. From the potentiostatic study were calculated the diffusion coefficient (3.2 × 10?6 cm2 s?1), the number of active nucleation sites (N 0), the nucleation rate (A) and the rate constant of the proton reduction process (k PR). A, N 0 and k PR 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.



Producto de Investigación




Artículos relacionados

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

Bioacumulación y daños genotóxicos en Pez Cebra (Danio rerio) por arsénico en aguas de Zimapán, Hida...

Morphological and magnetic properties of cobalt nanoclusters electrodeposited onto HOPG

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Hydrogen bond studies in substituted N-(2-hydroxyphenyl)--2-[(4-methylbenzenesulfonyl)amino]acetamid...

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

The role of temperature in copper electrocrystallization in ammoniachloride solutions

Nucleation and growth of cobalt onto different substrates: Part II. The upd-opd transition onto a go...

A theoretical quantum study on the distribution of electrophilic and nucleophilic active sites on Ag...

Influence of the Cation Nature of the Sulphate Salt on the Electrochemical Synthesis of Sulfate-Dope...