Activity of carbon supported Pt3Ru2 nanocatalyst in CO oxidation
Autor: | J.D. Lović, Amalija V. Tripković, Ksenija Dj. Popovic, Piotr Olszewski |
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Rok vydání: | 2009 |
Předmět: |
XRD
Inorganic chemistry chemistry.chemical_element Sulfuric acid 02 engineering and technology General Chemistry Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology CO oxidation 01 natural sciences 0104 chemical sciences Catalysis lcsh:Chemistry chemistry.chemical_compound lcsh:QD1-999 chemistry pH effect Steady state (chemistry) Rotating disk electrode Pt3Ru2/C nanocatalyst 0210 nano-technology Carbon anion effect Solid solution |
Zdroj: | Journal of the Serbian Chemical Society, Vol 74, Iss 8-9, Pp 965-975 (2009) |
ISSN: | 1820-7421 0352-5139 |
DOI: | 10.2298/jsc0909965p |
Popis: | The electrocatalytic activity of Pt 3 Ru 2 /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 Pt 3 Ru 2 /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 Pt 3 Ru 2 /C catalyst was influenced by pH and anions from the supporting electrolytes. The Pt 3 Ru 2 /C was more active in alkaline than in acid solution, as well as in perchloric than in sulfuric acid. Comparison of CO oxidation on Pt 3 Ru 2 /C and Pt/C revealed that the Pt 3 Ru 2 /C was more active than Pt/C in acid solution, while both catalysts had a similar activity in alkaline solution. |
Databáze: | OpenAIRE |
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