Infrared reflection absorption spectroscopy studies of CO adsorption on titania thin films and gold clusters supported on titania
| dc.creator | White, Kevin Rodney | |
| dc.date.accessioned | 2012-06-07T22:58:04Z | |
| dc.date.available | 2012-06-07T22:58:04Z | |
| dc.date.created | 1999 | |
| dc.date.issued | 1999 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references (leaves 45-46). | en |
| dc.description | Issued also on microfiche from Lange Micrographics. | en |
| dc.description.abstract | IRAS, MIES, and TPD studies were conducted on ultra-thin films of TiO₂(001) and TiO₂(001) films containing Au nanoclusters of varying size. Carbon monoxide was used as a probe molecule in all of these experiments. The IR data showed two distinct absorptions at 2180cm⁻¹ and 2110cm⁻¹. The 2180cm⁻¹ peak is assigned to CO adsorbed on Ti⁴⁺ sites The absorption at 2110cm⁻¹ appears to have at least two component peaks that may be from CO adsorbed on top of gold clusters and CO adsorbed at Au-TiO₂ interface sites. Experiments using TPD estimated the binding energy of CO to be 24.0kJ/mol. On gold clusters, the binding energy of CO was shown to vary according to cluster size. The binding energy of CO on gold was observed between 31. 1 and 38.4kJ/mol. MIES data did not show any substantial differences in the electronic properties of the TiO₂ or Au/TiO₂ surfaces when CO was adsorbed. It is however clear from the IRAS and TPD data that there are observable differences in these surfaces that are related to cluster size. | en |
| dc.format.digitalOrigin | reformatted digital | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1999-THESIS-W45 | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | chemistry. | en |
| dc.subject | Major chemistry. | en |
| dc.title | Infrared reflection absorption spectroscopy studies of CO adsorption on titania thin films and gold clusters supported on titania | en |
| dc.type | Thesis | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| thesis.degree.discipline | chemistry | en |
| thesis.degree.level | Masters | en |
| thesis.degree.name | M.S. | en |