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http://dx.doi.org/10.5012/bkcs.2009.30.6.1353

CO Adsorption on Mo(110) Studied Using Thermal Desorption Spectroscopy (TDS) and Ultraviolet Photoelectron Spectroscopy (UPS)  

Yang, Taek-Seung (Department of Chemistry, Sungkyunkwan University)
Jee, Hae-geun (Department of Chemistry, Sungkyunkwan University)
Boo, Jin-Hyo (Department of Chemistry, Sungkyunkwan University)
Kim, Young-Dok (Department of Chemistry, Sungkyunkwan University)
Lee, Soon-Bo (Department of Chemistry, Sungkyunkwan University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.6, 2009 , pp. 1353-1356 More about this Journal
Abstract
This study examined the adsorption of CO on a Mo(110) surface by Thermal Desorption Spectroscopy (TDS) and synchrotron-radiation based photoemission spectroscopy (SRPES). CO desorption was observed at approximately 400 K ($\alpha$-CO) and > 900 K ($\beta$-CO). When CO was exposed to Mo(110) at 100 K, it showed a tilted structure at low CO coverage and a vertical structure after saturation of the tilted CO. After heating the CO-precovered sample to 900 K, a broad peak at 12 eV below the Fermi level was identified in the valence level spectra, which was assigned to either the 4$\sigma$-molecular orbital of CO, or 2s of dissociated carbon. TDS results of the $\beta$-CO showed a first order desorption. These results are in a good agreement with the observations of CO adsorption on W(110) surfaces.
Keywords
Chemisorption; CO; Mo(110); Photoemission spectroscopy;
Citations & Related Records
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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