The Influence of Metal Cluster Size on Adsorption Energies: CO Adsorbed on Au Clusters Supported on TiO2
- 24 January 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (6) , 1892-1899
- https://doi.org/10.1021/ja030359y
Abstract
Infrared reflection absorption spectroscopy (IRAS) has been used to study CO adsorption on Au clusters ranging in size from 1.8 to 3.1 nm, supported on TiO2. The adsorbed CO vibrational frequency blue-shifts slightly (approximately 4 cm-1) compared to that adsorbed on bulk Au, whereas the heats of adsorption (−ΔHads) increase sharply with decreasing cluster size, from 12.5 to 18.3 kcal/mol.Keywords
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