The titanium dioxide (110) surface: Structure, reactivity, and metal/oxide interfaces
In order to understand the surface physical and chemical properties of oxides, we have studied TiO{sub 2}(110) as a model oxide surface, using multiple ultrahigh vacuum surface science techniques. The investigation includes the properties of clean TiO{sub 2} (110) surfaces with different surface defect densities, the adsorption of oxygen and water on TiO{sub 2} surfaces with different surface defects densities, and the growth of ultrathin 3d-metal films on TiO{sub 2}. The combination of Low Energy Ion Scattering (LEIS) and X-ray Photoelectron Spectroscopy (XPS) enables us to quantitatively measure the TiO{sub 2} surface oxygen vacancies, and their reactivity with water. The growth of ultrathin metal (Cr, Fe, and Cu) films on TiO{sub 2}(110) surfaces and the changes in surface electronic structure due to metal deposition have also been studied. A trend in ultrathin film growth is observed in the systematic study, namely the wetting ability of 3d-transition metal son TiO{sub 2}(110) is strongly correlated to the strength of the metal-oxygen bond. The geometric structures of TiO{sub 2}(110) and ultrathin metal films on TiO{sub 2} are investigated using Low Energy Electron Diffraction (LEED), Medium Energy backscattered Electron Diffraction (MEED) and Angle-Resolved XPS (ARXPS).
- Research Organization:
- Rutgers--the State Univ., New Brunswick, NJ (United States)
- OSTI ID:
- 106820
- Country of Publication:
- United States
- Language:
- English
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