A photoelectron and energy-loss spectroscopy study of Ti and its interaction with H2, O2, N2 and NH3

Autor: Steven L. Bernasek, B.M. Biwer
Rok vydání: 1986
Předmět:
Zdroj: Surface Science. 167:207-230
ISSN: 0039-6028
DOI: 10.1016/0039-6028(86)90795-8
Popis: A unified electron spectroscopic study of polycrystalline Ti and its interaction with H2, O2, N2, and NH3 are described. Auger electron spectroscopy (AES), electron energy-loss spectroscopy (ELS), ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) are combined to provide detailed information about the electronic structure of the titanium surface and its interaction with these adsorbates. X-ray and ultraviolet photoelectron spectra and electron energy-loss spectra are presented for the clean titanium surface, and following exposure to H2, O2, N2 and NH3. Spectral assignments are provided in each case. The electron spectra of oxygen exposed Ti and nitrogen sputtered Ti are quite similar, and are interpreted with reference to band structure calculations for TiO and TiN. Electron spectroscopy indicates essentially complete dissociative adsorption of NH3 on the clean titanium surface.
Databáze: OpenAIRE