Login
- Title:
Charging of Au atoms on TiO2 thin films from CO vibrational spectroscopy and DFT calculations
- Author(s):
- Woerz, Anke S.; Heiz, Ueli; Cinquini, Fabrizio; Pacchioni, Gianfranco
- Abstract:
- Au atoms have been deposited on oxidized and reduced TiO2 thin films grown on Mo(110). The Au binding sites and the occurrence of Au-TiO2 charge transfer were identified by measuring IR spectra as a function of temp. and substrate prepn. The results were interpreted by slab model DFT calcns. Au binds weakly to regular TiO2 sites (De < 0.5 eV) where it remains neutral, and diffuses easily even at low temp. until it gets trapped at strong binding sites such as O vacancies (
- Keywords:
- Adsorbed substances Density of states Electron transfer Films Surface electric charge Surface state (charging of Au atoms on TiO2 thin films) gold adsorbate titania film charge transfer
- Congress title:
- CAN 143:254527 66-3 Surface Chemistry and Colloids Lehrstuhl fuer Physikalische Chemie 1, Technische Universitaet Muenchen, Garching, Germany. Journal 1520-6106 7440-57-5 (Gold) Role: PEP (Physical, engineering or chemical process), PRP (Properties), PYP (Physical process), PROC (Process) (charging of Au atoms on TiO2 thin films); 13463-67-7 (Titania) Role: PRP (Properties) (charging of Au atoms on TiO2 thin films)
- Journal title:
- J. Phys. Chem. B
- Year:
- 2005
- Journal volume:
- 109
- Journal issue:
- 39
- Pages contribution:
- 18418-18426
- Fulltext / DOI:
- doi:10.1021/jp054093o
BibTeX