Activity of carbon supported Pt3Ru2 nanocatalyst in CO oxidation

Autor: J.D. Lović, Amalija V. Tripković, Ksenija Dj. Popovic, Piotr Olszewski
Rok vydání: 2009
Předmět:
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