Adsorption and Dissociation of CO 2 on Ru(0001).

Authors :: Pachecka M
Sturm JM
Lee CJ
Bijkerk F
Source :: The journal of physical chemistry. C, Nanomaterials and interfaces [J Phys Chem C Nanomater Interfaces] 2017 Mar 30; Vol. 121 (12), pp. 6729-6735. Date of Electronic Publication: 2017 Mar 03.
Publication Year :: 2017
Abstract: The adsorption and dissociation of carbon dioxide on a Ru(0001) single crystal surface was investigated by reflection-absorption infrared spectroscopy (RAIRS) and temperature-programmed desorption (TPD) spectroscopy for CO <subscript>2</subscript> adsorbed at 85 K. RAIRS spectroscopy shows that the adsorption of CO <subscript>2</subscript> on a Ru(0001) single crystal is partially dissociative, resulting in CO <subscript>2</subscript> and CO. The CO vibrational mode was also observed to split into two distinct modes, indicating two general populations of CO present at the surface. Furthermore, a time-dependent blue-shift is observed, which is characteristic of increasing CO surface coverage. TPD showed that coverages of up to 0.3 ML were obtained, and no evidence for chemisorption of oxygen on ruthenium was found.

Language :: English
ISSN :: 1932-7447
Volume :: 121
Issue :: 12
Database :: MEDLINE
Journal :: The journal of physical chemistry. C, Nanomaterials and interfaces
Publication Type :: Academic Journal
Accession number :: 28413569
Full Text :: https://doi.org/10.1021/acs.jpcc.7b00021