| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 192482 | Electrochimica Acta | 2008 | 7 Pages |
Abstract
ATR-FTIRAS measurements combined with linear potential sweep voltammetry were conducted to perform detailed analysis of CO adsorption/oxidation processes on a chemically deposited Pt film on Si ATR prism. Roles of terrace and step edge sites were clearly demonstrated based on the band analyses of the atop, CO(L), and bridge bonded CO, CO(B), spectra during the adsorption/oxidation processes. In the main current peak region above 0.45 V, a direct spectroscopic evidence was obtained to show oxidation of CO(L) and its diffusion to the step edge sites, where local coverage of CO(L) and CO(B) increases between 0.5 V and 0.64 V. This triggers further oxidation of the overall CO adlayer.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
K. Kunimatsu, T. Sato, H. Uchida, M. Watanabe,