Abstract
The structural and electrochemical properties of RuPt thin-film electrodes fabricated by radio frequency (rf) magnetron sputtering have been investigated. Grazing incidence X-ray diffraction data show a transition from a face-centered cubic (fee) to hexagonal cubic-packed (hep) structure as the Ru percentage increases. The transition occurs gradually between 32 and 58% Ru, which is significantly different from the bulk RuPt phase diagram. The catalytic activity of the thin-film electrodes for methanol oxidation shows a broad peak near 40-60% Ru, consistent with previous reports. The relationship between catalytic activity and film structure is discussed and contrasted with previous investigations.
| Original language | English |
|---|---|
| Pages (from-to) | 12845-12849 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry B |
| Volume | 109 |
| Issue number | 26 |
| DOIs | |
| State | Published - 2005.07.7 |
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