| Autor: |
KSENIJA DJ. POPOVIĆ, JELENA D. LOVIĆ, AMALIJA V. TRIPKOVIĆ, PIOTR K. OLSZEWSKI |
| Jazyk: |
angličtina |
| Rok vydání: |
2009 |
| Předmět: |
|
| Zdroj: |
Journal of the Serbian Chemical Society, Vol 74, Iss 8-9, Pp 965-975 (2009) |
| Druh dokumentu: |
article |
| ISSN: |
0352-5139 |
| Popis: |
The electrocatalytic activity of Pt3Ru2/C nanocatalyst toward the electro-oxidation of bulk CO was examined in acid and alkaline solution at ambient temperature using the thin-film, rotating disk electrode (RDE) method. The catalyst was characterized by XRD analysis. The XRD pattern revealed that the Pt3Ru2/C catalyst consisted of two structures, i.e., Pt–Ru-fcc and Ru-hcp (a solid solution of Ru in Pt and a small amount of Ru or a solid solution of Pt in Ru). Electrocatalytic activities were measured by applying potentiodynamic and steady state techniques. The oxidation of CO on the Pt3Ru2/C catalyst was influenced by pH and anions from the supporting electrolytes. The Pt3Ru2/C was more active in alkaline than in acid solution, as well as in perchloric than in sulfuric acid. Comparison of CO oxidation on Pt3Ru2/C and Pt/C revealed that the Pt3Ru2/C was more active than Pt/C in acid solution, while both catalysts had a similar activity in alkaline solution. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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