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

A.-C. Johansson, J.V. Larsen, M.A. Verheijen, K.B. Haugshøj, H. Clausen, W.M.M. Kessels, L.H. Christensen, E.V. Thomsen

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Abstract

Pt-Ru catalysts of various compositions, between 0 and 100 at.% 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. O 2 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 29 at.% exhibited highest catalytic activity. © 2014 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)481-486
JournalJournal of Catalysis
Volume311
DOIs
Publication statusPublished - 2014

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