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Abstract:

The voltammetric reduction of PdII(DMGH)2 preadsorbed on mercury in 0.2 M acetic/acetate buffer (pH 4.85) was studied. Two adsorbed surface stages could be distinguished: while a submonolayer is present molecules adsorb parallel to the electrode, but at high surface concentration perpendicular interactions between adsorbed molecules lead to bilayer or even multilayer formation. The surface charge value obtained for the reduction of a virtual monolayer is QM = 38 μC cm-2. The electrochemical behaviour of adsorbed species under submonolayer coverage is explained in terms of an ErCi surface reaction scheme and a rate expression that takes into account attractive forces between the adsorbed reactant complex molecules. © 2009 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Adsorption and reduction of palladium-dimethylglyoxime complex
Autor:Ramírez, S.A.; Gordillo, G.J.
Filiación:Instituto de Ciencias, Universidad Nacional de General Sarmiento, J.M. Gutierrez 1150, (1613), Los Polvorines, Prov. de Buenos Aires, Argentina
INQUIMAE - DQIAQF, Facultad de Ciencias Exactas y Naturales (UBA), Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II 1428 Buenos Aires, Argentina
Palabras clave:Adsorption; Capacitance; Dimethylglyoxime; Mercury electrode; Palladium; Stripping voltammetry; Adsorption; Capacitance; Electrochemical electrodes; Lead; Mercury (metal); Molecules; Palladium; Palladium compounds; Reduction; Stripping (dyes); Voltammetry; Adsorbed molecules; Adsorbed species; Adsorption and reductions; Attractive forces; Bi layers; Complex molecules; Dimethylglyoxime; Dimethylglyoxime complexes; Electrochemical behaviours; Mercury electrode; Multilayer formations; Rate expressions; Stripping voltammetry; Sub-monolayer coverages; Submonolayer; Surface concentrations; Voltammetric reductions; Surface reactions
Año:2009
Volumen:629
Número:1-2
Página de inicio:147
Página de fin:151
DOI: http://dx.doi.org/10.1016/j.jelechem.2009.02.006
Título revista:Journal of Electroanalytical Chemistry
Título revista abreviado:J Electroanal Chem
ISSN:15726657
CODEN:JECHE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v629_n1-2_p147_Ramirez

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Citas:

---------- APA ----------
Ramírez, S.A. & Gordillo, G.J. (2009) . Adsorption and reduction of palladium-dimethylglyoxime complex. Journal of Electroanalytical Chemistry, 629(1-2), 147-151.
http://dx.doi.org/10.1016/j.jelechem.2009.02.006
---------- CHICAGO ----------
Ramírez, S.A., Gordillo, G.J. "Adsorption and reduction of palladium-dimethylglyoxime complex" . Journal of Electroanalytical Chemistry 629, no. 1-2 (2009) : 147-151.
http://dx.doi.org/10.1016/j.jelechem.2009.02.006
---------- MLA ----------
Ramírez, S.A., Gordillo, G.J. "Adsorption and reduction of palladium-dimethylglyoxime complex" . Journal of Electroanalytical Chemistry, vol. 629, no. 1-2, 2009, pp. 147-151.
http://dx.doi.org/10.1016/j.jelechem.2009.02.006
---------- VANCOUVER ----------
Ramírez, S.A., Gordillo, G.J. Adsorption and reduction of palladium-dimethylglyoxime complex. J Electroanal Chem. 2009;629(1-2):147-151.
http://dx.doi.org/10.1016/j.jelechem.2009.02.006