| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000197759 |
| ISSN: | 0100-4042 |
| Authors: | Santos, Mauro C1 Miwa, Douglas W Machado, Sergio A.S Avaca, Luis A |
| Institutions: | 1Universidade de Sao Paulo, Instituto de Quimica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2001 |
| Season: | Jul-Ago |
| Volumen: | 24 |
| Number: | 4 |
| Pages: | 465-472 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, descriptivo |
| English abstract | 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 |
| Disciplines: | Química |
| Keyword: | Química analítica, Química inorgánica, Cadmio, Oro, Oro policristalino, Voltametría, Microgravimetría |
| Keyword: | Chemistry, Analytical chemistry, Inorganic chemistry, Cadmium, Gold, Policrystalline gold, Voltammetry, Microgravimetry |
| Full text: | Texto completo (Ver HTML) |
