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Characterization of metal clusters (Pd and Au) supported on various metal oxide surfaces (MgO and TiO2)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Goodman, D. W. |
| Copyright Year | 1997 |
| Abstract | Au clusters supported on the TiO2(001)/Mo(100) surface and Pd clusters supported on the MgO(100)/Mo(100) surface have been studied using temperature programmed desorption, ion scattering spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy. Three dimensional growth has been observed at 300 K for both cases. The adsorption energy of Au on the TiO2(001) surface has been measured to be 50 kcal/mol using temperature programmed desorption, compared to the adhesive energy of 90 kcal/mol for the bulk Au metal. At an equivalent Au coverage of 1.8 ML, very homogenous, hemispherical Au particles with an average diameter of 25 A and a height of 10 A are present on a TiO2(001)/Mo(100) surface. Increasing the Au coverage to 3 equivalent monolayers produces ∼60 A diameter clusters. The scanning tunneling spectroscopy measurements show a gradual development of the metallic character of the Au clusters with increasing cluster size. Very similar results have been obtained for the Pd clusters su... |
| Starting Page | 1261 |
| Ending Page | 1268 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1116/1.580604 |
| Volume Number | 15 |
| Alternate Webpage(s) | http://www.chem.tamu.edu/rgroup/goodman/pdf%20files/303_JVSTA%2097%201261-97.pdf |
| Alternate Webpage(s) | https://doi.org/10.1116/1.580604 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
