Reduction behavior of oxidized Pd(100) and Pd75Ag25(100) surfaces using CO

Autor:	V. R. Fernandes, Mari Helene Farstad, Johan Gustafson, L. E. Walle, Ingeborg-Helene Svenum, Anne Borg, Sara Blomberg, Edvin Lundgren
Rok vydání:	2014
Předmět:	Phase boundary Chemistry Diffusion Analytical chemistry Surfaces and Interfaces Atmospheric temperature range Condensed Matter Physics Surfaces Coatings and Films Reduction (complexity) X-ray photoelectron spectroscopy Materials Chemistry Density functional theory Surface layer Spectroscopy
Zdroj:	Surface Science. 621:31-39
ISSN:	0039-6028
DOI:	10.1016/j.susc.2013.10.018
Popis:	The reduction of the (A root 5x root 5)R27 degrees surface oxide on Pd(100) and Pd75Ag25(100) surfaces by CO has been investigated by high-resolution X-ray photoelectron spectroscopy in combination with kinetic analysis using the Avrami-Erofeev theory. For both surfaces we observed faster reduction with increasing temperature. Kinetic analysis indicates that the reduction process is phase boundary controlled for Pd(100) in the temperature range investigated, from 30 degrees C to 120 degrees C On Pd75Ag25(100) the surface oxide reduction is significantly slower compared to Pd(100). Also in this case, a phase boundary controlled reduction of the surface oxide is observed at temperatures of 120 C and above, while at T
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::08a8488ef51143e5760287624dd4a454 https://doi.org/10.1016/j.susc.2013.10.018 Zobrazit plný text záznamu Full Text from ScienceDirect