Abstract
With the combination of various in-situ surface science tools, surface chemical and structural properties of bimetallic AuPd(1 1 0) alloys are characterized under elevated CO pressure. Under 1 Torr of CO gas pressure, STM images show the formation of nano-sized surface rice-grains along the index direction of [1-10] while PM-IRRAS shows new CO vibrational band. This new vibrational band of PM-IRRAS is confirmed as the CO molecules attached to atop site of Pd with the results of ambient pressure XPS. In the case of adsorption of CO on AuPd(1 1 0) alloys, the so-called "pressure gap" exists and the surface morphology and its chemical states change at elevated pressure conditions.
Original language | English |
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Pages (from-to) | 39-45 |
Number of pages | 7 |
Journal | Catalysis Today |
Volume | 260 |
DOIs | |
Publication status | Published - 2016 Feb 1 |
Keywords
- AP-XPS
- AuPd alloys
- Catalysis
- STM
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)