Gamma and He Ion Radiolysis of Copper Oxides
| Autor: | Sarah C. Reiff, Jay A. LaVerne |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Copper oxide
Diffuse reflectance infrared fourier transform Hydrogen Chemistry Inorganic chemistry Analytical chemistry Oxide chemistry.chemical_element Copper Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy X-ray photoelectron spectroscopy Desorption Radiolysis Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 119:8821-8828 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.5b02079 |
| Popis: | Two copper oxides, cuprous and cupric oxide, were characterized using a variety of surface techniques including scanning electron microscopy, temperature-programmed desorption, diffuse reflectance infrared Fourier transform spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction to analyze changes in the oxide surface following irradiation with γ-rays and 5 MeV 4He ions. The radiation chemical yield for molecular hydrogen was also measured for copper oxide powders with adsorbed water as well as with slurries containing various amounts of water. The yield of hydrogen was found to be slightly greater than the yield expected for bulk water radiolysis, indicating some small radiation chemical effect of the oxide surface on water. X-ray photoelectron spectroscopy indicated that the amount of OH groups present on the cuprous oxide surface decreased as a result of the irradiation while the cupric oxide surface had an increase in OH groups on the surface. This result suggests tha... |
| Databáze: | OpenAIRE |
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