| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000197759 |
| ISSN: | 0100-4042 |
| Autores: | Santos, Mauro C1 Miwa, Douglas W Machado, Sergio A.S Avaca, Luis A |
| Instituciones: | 1Universidade de Sao Paulo, Instituto de Quimica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2001 |
| Periodo: | Jul-Ago |
| Volumen: | 24 |
| Número: | 4 |
| Paginación: | 465-472 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, descriptivo |
| Resumen en inglés | Cadmium UPD on Au was studied by voltammetric and microgravimetric measurements. In the oxide formation/reduction potential region, a mass increasing/decreasing of 32 ng cm-2 was associated to incorporation/elimination of one oxygen per active site. The modifications promoted in the voltammetric and mass profiles by 10-5 M Cd(ClO4)2 are restricted to potentials more negative than 0.4 V. After a 120 s potential delay at 0.05 V, the positive sweep reveals an anodic peak with charge of 40 mC cm-2 and mass decrease of 22 ng cm-2, associated to Cdads dissolution. Sulphate or chloride was added to the solution without significant influence, due to the low coverage with Cd or anions |
| Disciplinas: | Química |
| Palabras clave: | Química analítica, Química inorgánica, Cadmio, Oro, Oro policristalino, Voltametría, Microgravimetría |
| Keyword: | Chemistry, Analytical chemistry, Inorganic chemistry, Cadmium, Gold, Policrystalline gold, Voltammetry, Microgravimetry |
| Texte intégral: | Texto completo (Ver HTML) |
