Photoelectron spectroscopic study of X-ray induced reduction of CeO2

Autor:	T. Shripathi, M.V Rama Rao
Rok vydání:	1997
Předmět:	Radiation Chemistry Analytical chemistry X-ray Pellets Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Electronic Optical and Magnetic Materials Prolonged exposure X-ray photoelectron spectroscopy Pellet Irradiation Physical and Theoretical Chemistry Spectroscopy
Zdroj:	Journal of Electron Spectroscopy and Related Phenomena. 87:121-126
ISSN:	0368-2048
DOI:	10.1016/s0368-2048(97)00087-x
Popis:	XPS technique is used to study the modification induced in CeO2 on exposure to Al Kα X-rays. A study of Ce (3d) and O (1s) spectra of sintered and unsintered pellets of ceria with X-ray exposure time is carried out to investigate the effect of hydroxyl species on X-ray induced reduction of CeO2. After prolonged exposure to X-rays, a colour change is observed on the sample surface of the unsintered pellet. Results show that the reduction of ceria to sub-stoichiometric oxides occurs at a faster rate in the unsintered pellet on X-ray irradiation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b43affdfc33fc96bb6d69f619f211f1 https://doi.org/10.1016/s0368-2048(97)00087-x Zobrazit plný text záznamu Full Text from ScienceDirect