| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Fed Abc, CCNH, LEMN, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Grp Mat Eletroquim & Metodos Eletroanalit, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | Electrochimica Acta; v. 58, p. 1-5, DEC 30 2011. |
| Web of Science Citations: | 9 |
| Abstract | |
Interfacial phenomena involved in the underpotential deposition of tellurium layers were studied with an electrochemical quartz crystal nanobalance (EQCN) in perchloric acid solution (pH = 1). The in situ study of the oxidation kinetics showed that the oxidation of the Te layer deposited neighbor a Te(ads)/Au provides evidence of TeO(2ads) formation with the incorporation of oxygen to induce the formation of H(2)TeO(3). From the calculations of the first tellurium layer (82 ng cm(-2)), the mass expected for the second layer deposited in underpotential control was found. Moreover, the oxidation of Te(ads) followed a bi-functional mechanism involving the oxygen incorporated before the tellurium oxidation at high overpotentials. The combination of powerful interfacial methods (cyclic voltammetry and EQCN) gives a new perspective on tellurium electrodeposition and leads to a comprehensive understanding of the interfacial architecture. (C) 2011 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 10/16511-6 - Energy generation from biofuel using nanostructures |
| Grantee: | Mauro Coelho dos Santos |
| Support Opportunities: | Regular Research Grants |