Electrocatalytic activity of atomic layer deposited Pt–Ru catalysts onto N-doped carbon nanotubes

Anne-Charlotte Elisabeth Birgitta Johansson, Jackie Vincent Larsen, Marcel A. Verheijen, Kenneth B. Haugshøj, Henrik F. Clausen, Wilhelmus M.M. Kessels, Leif Højslet Christensen, Erik Vilain Thomsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Pt–Ru catalysts of various compositions, between 0 and 100at.% of Ru, were deposited onto N-doped multi-walled carbon nanotubes (N-CNTs) by atomic layer deposition (ALD) at 250°C. The Pt and Ru precursors were trimethyl(methylcyclopentadienyl)platinum (MeCpPtMe3) and bis(ethylcyclopentadienyl)ruthenium (Ru(EtCp)2), respectively. O2 was used as the reactant in both processes. The composition of the catalysts was easily tuned by varying the Pt-to-Ru ALD cycle ratio. The catalysts were tested toward the CO oxidation and methanol oxidation reaction (MOR) in a three-electrode electrochemical set-up. For the compositions investigated, the catalysts with a Ru content of 29at.% exhibited highest catalytic activity.

    Original languageEnglish
    JournalJournal of Catalysis
    Volume311
    Pages (from-to)481-486
    ISSN0021-9517
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Pt–Ru
    • ALD
    • N-doped CNT
    • CO oxidation
    • MOR
    • DMFC

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