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 |
Referencias:
- Zimmermann, S., Sures, B., (2004) Environ. Sci. Poll. Res., 11, pp. 194-199
- Wedepohl, K., (1995) Geochim. Cosmochim. Acta, 59, pp. 1217-1232
- Moldovan, M., Rauch, S., Gomez, M., Palacios, M.A., Morrison, G.M., (2001) Water Res., 35, pp. 4175-4183
- Ravindra, K., Bencs, L., van Grieken, R.V., (2004) Sci. Total Environ., 318, pp. 1-43
- Ek, K.H., Morrison, G.M., Rauch, S., (2004) Sci. Total Environ., 334-335, pp. 21-38
- Zereini, F., Wiseman, C., Püttmann, W., (2007) Environ. Sci. Technol., 41, pp. 451-456
- Ramírez, S.A., Gordillo, G.J., Posadas, D., (1996) J. Electroanal. Chem., 407, pp. 219-225
- Cordon, F., Ramírez, S.A., Gordillo, G.J., (2002) J. Electroanal. Chem., 534, pp. 131-141
- Georgieva, M., Pihlar, B., (1996) Electroanalysis, 8, pp. 1155-1159
- Abiman, P., Wildgoose, G.G., Xiao, L., Compton, R.G., (2008) Electroanalysis, 14, pp. 1607-1609
- Wang, J., (2005) Electroanalysis, 17, pp. 1341-1346
- Krolicka, A., Bobrowski, A., (2004) Electrochem. Commun., 6, pp. 99-104
- Hutton, E.A., Hocevar, S.B., Ogorevc, B., Smith, M.R., (2003) Electrochem. Commun., 5, pp. 765-769
- Wang, J., Varughese, K., (1987) Anal. Chim. Acta, 199, pp. 185-189
- Locatelli, C., (2005) Electroanalysis, 17, pp. 140-147
- Locatelli, C., (2006) Anal. Chim. Acta, 557, pp. 70-77
- Locatelli, C., (2007) Electroanalysis, 19, pp. 2167-2175
- Zhao, Z., Gao, Z., (1988) J. Electroanal. Chem., 256, pp. 65-75
- Abiman, P., Wildgoose, G.G., Xiao, L., Compton, R.G., (2008) Electroanalysis, 20, pp. 1607-1609
- Damaskin, B.B., Petrii, O.A., Batrakov, V.V., (1971) Adsorption of Organic Compounds on Electrodes, , Plenum Press, New York
- Godicki, E., Rundle, R., (1953) Acta Cryst., 6, pp. 487-495
- Hussain, M.S., Salinas, B.E.V., Schlemper, E.O., (1979) Acta Cryst., B35, pp. 628-633
- Dakhel, A.A., (2006) Cryst. Res. Technol., 41, pp. 68-71
- Bard, A.J., Faulkner, L.R., (2001) Electrochemical Methods: Fundamentals and Applications. second ed, , J. Wiley and Sons, New York
- Laviron, E., (1979) J. Electroanal. Chem., 101, pp. 19-28
- Sirinivasan, S., Gileadi, E., (1966) Electrochim. Acta, 11, pp. 321-335
- Angerstein-Kozlowska, H., Conway, B.E., (1979) J. Electroanal. Chem., 95, pp. 1-28
- Laviron, E., (1974) J. Electroanal. Chem., 52, pp. 395-402
- Ramírez, S.A., Gordillo, G.J., Posadas, D., (1997) J. Electroanal. Chem., 431, pp. 171-181
- Ohashi, Y., Hanazaki, I., Nagakura, S., (1970) Inorg. Chem., 9, pp. 2551-2556
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