Identification of the fixed nitrogen containing species during the photo-oxidative fixation of molecular nitrogen on UV-illuminated TiO2 surfaces
| Autor: | R. I. Bickley, C. Real, José Antonio Navío |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Surfaces and Interfaces General Chemistry Condensed Matter Physics medicine.disease_cause Nitrogen Surfaces Coatings and Films chemistry.chemical_compound Adsorption chemistry X-ray photoelectron spectroscopy Hyponitrite Materials Chemistry medicine Nitrogen fixation Nitrogen oxide Crystallite Ultraviolet |
| Zdroj: | Surface and Interface Analysis. 22:417-420 |
| ISSN: | 1096-9918 0142-2421 |
| DOI: | 10.1002/sia.740220190 |
| Popis: | Ultraviolet photoexcitation of hydroxylated TiO 2 surfaces in the presence of a mixture on N 2 /O 2 gas (air) produces some adsorbed nitrogen oxide species which were previously assigned indirectly as probably N 2 O 2 2- . Direct assignment is now reported here. From comparisons of the thermodesorption profiles and the XPS results from polycrystalline Na 2 N 2 O 2 and from the corresponding data obtained from TiO 2 surfaces upon which Na 2 N 2 O 2 had been allowed to adsorb with the thermodesorption profile and XPS data obtained from the photo-induced fixation of nitrogen on TiO 2 , it can be concluded that the principal species formed during the photo-oxidative fixation of molecular nitrogen on TiO 2 is hyponitrite anion, N 2 O 2 2 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text