The assessment of nanocrystalline surface defects on real versus model catalysts probed via vibrational spectroscopy of adsorbed CO
| Autor: | Elena R. Savinova, Nicolas Alonso-Vante, Françoise Hahn |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Analytical chemistry Infrared spectroscopy chemistry.chemical_element Surfaces and Interfaces Condensed Matter Physics Electrocatalyst Nanocrystalline material Surfaces Coatings and Films chemistry.chemical_compound chemistry Nanocrystal Chemical engineering Materials Chemistry Grain boundary Reactivity (chemistry) Carbon Carbon monoxide |
| Zdroj: | Surface Science. 603:1892-1899 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2008.09.050 |
| Popis: | In this work we compare the experimental results for “real” fuel cell carbon supported Pt–Ru catalysts with the literature data for well defined model surfaces. The spectroscopic carbon monoxide probing, in the infrared region, clearly reveals differences in the reactivity of single-grain metal nanoparticles and multi-grained nanostructures with high concentrations of grain boundary defect regions. We use structural, spectroscopic and electrochemical information in an effort to rationalize the particle size and grain boundary effects in electrocatalysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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