Artículo
Abstract:
The adsorption of the Ni(II) dimethylglyoxime complex, Ni(DMGH)2, on mercury was studied as a function of time by voltammetric and differential capacitance methods in ammonia and borate buffers. The influence of the adsorption potential and the complex concentration was also studied. The adsorption equilibrium shows a reversible behaviour. The experimental data conform to the Frumkin adsorption isotherm. The standard electrochemical Gibbs energy of adsorption and the interaction parameter obtained from the fit indicate the presence of attractive forces between adsorbed molecules and a standard electrochemical Gibbs energy of adsorption comparable with those of pentanol and hexanol. The experimental rate of adsorption, at short times, is independent of time. It is also linearly dependent on the complex concentration and exponentially dependent on the adsorption potential. The experimental rate law can be explained with a model considering the adsorption kinetics as being controlled by the adsorption of the complex.
Registro:
| Documento: | Artículo |
| Título: | The adsorption of nickel dimethylglyoxime complex on mercury |
| Autor: | Ramirez, S.; Gordillo, G.J.; Posadas, D. |
| Filiación: | DQIAQF, Fac. de Ciencias Exactas y Naturales, Pabellon II, 1428 Buenos Aires, Argentina INIFTA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina |
| Palabras clave: | Adsorption; Mercury; Nickel dimethylglyoxime complex; Adsorption; Adsorption isotherms; Ammonia; Cyclic voltammetry; Gibbs free energy; Mercury (metal); Nickel compounds; Reaction kinetics; Adsorption potential; Differential capacitance method; Nickel dimethylglyoxime complex; Organometallics |
| Año: | 1996 |
| Volumen: | 407 |
| Número: | 1-2 |
| Página de inicio: | 219 |
| Página de fin: | 225 |
| DOI: | http://dx.doi.org/10.1016/0022-0728(95)04481-7 |
| 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_v407_n1-2_p219_Ramirez |
Referencias:
- Pihlar, B., Valenta, P., Nürnberg, H., (1981) Fresenius Z. Anal. Chem., 307, p. 337
- Pihlar, B., Valenta, P., Nürnberg, H., (1986) J. Electroanal. Chem., 214, p. 157
- Jin, W., Liu, K., (1985) Acta Chim. Sinica, 43, p. 923
- Jin, W., Liu, K., (1987) J. Electroanal. Chem., 216, p. 181
- Wilkinson, C., (1972) Chem. Rev., 72, p. 6
- Grahame, D.C., (1941) J. Am. Chem. Soc., 63, p. 1207
- Martell, A., Smith, R., (1977) Critical Stability Constants, Plenum, , New York
- Wopshall, R.H., Shain, I., (1967) Anal. Chem., 39, p. 1514
- Damaskin, B., Petrii, O.A., Batrakov, V., (1971) Adsorption of Organic Compounds at Electrodes, , Plenum, New York
- Gileadi, E., (1967) Electrosorption, , E. Giledi (Ed), Plenum, New York
- Bard, A.J., Faulkner, L.R., (1980) Electrochemical Methods, , Wiley, New York
- Conway, B.E., (1965) Theory and Principles of Electrode Processes, , Ronald Press, New York
- Delahay, P., Trachtenberg, I., (1957) J. Am. Chem. Soc., 79, p. 2355
- Reinmuth, W., (1961) J. Phys. Chem., 65, p. 473
Citas:
---------- APA ----------
Ramirez, S., Gordillo, G.J. & Posadas, D. (1996) . The adsorption of nickel dimethylglyoxime complex on mercury. Journal of Electroanalytical Chemistry, 407(1-2), 219-225.http://dx.doi.org/10.1016/0022-0728(95)04481-7
---------- CHICAGO ----------
Ramirez, S., Gordillo, G.J., Posadas, D. "The adsorption of nickel dimethylglyoxime complex on mercury" . Journal of Electroanalytical Chemistry 407, no. 1-2 (1996) : 219-225.http://dx.doi.org/10.1016/0022-0728(95)04481-7
---------- MLA ----------
Ramirez, S., Gordillo, G.J., Posadas, D. "The adsorption of nickel dimethylglyoxime complex on mercury" . Journal of Electroanalytical Chemistry, vol. 407, no. 1-2, 1996, pp. 219-225.http://dx.doi.org/10.1016/0022-0728(95)04481-7
---------- VANCOUVER ----------
Ramirez, S., Gordillo, G.J., Posadas, D. The adsorption of nickel dimethylglyoxime complex on mercury. J Electroanal Chem. 1996;407(1-2):219-225.http://dx.doi.org/10.1016/0022-0728(95)04481-7
