Electrocatalytic activity of atomic layer deposited Pt-Ru catalysts onto N-doped carbon nanotubes
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- 作者：Anne-Charlotte Johansson ; Jackie V. Larsen ; Marcel A. Verheijen ; Kenneth B. Haugsh酶j ; Henrik F. Clausen ; Wilhelmus M.M. Kessels ; Leif H. Christensen ; Erik V. Thomsen
- 关键词：Pt&ndash ; Ru ; ALD ; N-doped CNT ; CO oxidation ; MOR ; DMFC
- 刊名：Journal of Catalysis
- 出版年：March, 2014
- 年：2014
- 卷：311
- 期：Complete
- 页码：481-486
- 全文大小：1303 K
文摘
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 掳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 29 at.% exhibited highest catalytic activity.