| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [1] Univ Estadual Paulista UNESP, Inst Quim, Dept Fisicoquim, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Langmuir; v. 28, n. 2, p. 1064-1067, JAN 17 2012. |
| Web of Science Citations: | 3 |
| Abstract | |
The yields of products of methanol oxidation (HCHO, HCOOH, and CO2) were studied for carbon-supported PtRu nanoparticles having different amounts of alloyed and oxide phases. It is demonstrated that the increase in the Pt 5d-band vacancy enhances the production of CO2, which is not directly related with the catalytic activity for CO oxidation. Results prove the relevant role of oxides and, at the same time, shed some new light on mechanistic aspects of methanol oxidation on PtRu nanocatalysts. It is also demonstrated that extrapolating from the behavior of smooth surfaces to nanoparticle systems is not always valid. (AU) | |
| FAPESP's process: | 11/06538-7 - New strategies in the development of fuel cell catalysts: advanced methods of synthesis and on line and in situ techniques in the study of catalytic activity |
| Grantee: | Hebe de las Mercedes Villullas |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 06/60769-2 - Estudo da oxidacao de metanol e etanol sobre catalisadores bimetalicos suportados preparados por metodos coloidais. |
| Grantee: | Denis Ricardo Martins de Godoi |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 07/54434-0 - Preparacao e caracterizacao de nanoparticulas metalicas e bimetalicas coloidais para eletrocatalise - parte ii. |
| Grantee: | Hebe de las Mercedes Villullas |
| Support Opportunities: | Regular Research Grants |