Unusual adsorption state of CO on Cs-covered Ru(001)

H. Kondoh; H. Nozoye

doi:10.1021/j100053a005

Unusual adsorption state of CO on Cs-covered Ru(001)

H. Kondoh, H. Nozoye

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Abstract

Adsorption of CO on Cs-precovered Ru(001) with one-monolayer coverage (θ_Cs = 0.33) has been investigated by use of electron energy loss spectroscopy (EELS), temperature-programmed desorption (TPD), and low-energy electron diffraction (LEED). The C-O stretching mode of the adsorbed CO does not appear in the specular mode of EELS but clearly appears in the off-specular mode at an unusually low frequency of 1245 cm^-1. This unusual adsorption state has been interpreted in terms of an inclined or a side-on adsorption geometry of CO and formation of a double-layer structure (Cs/Cs + CO/Ru(001)) where the CO dipole is screened by the second-layer Cs.

Original language	English
Pages (from-to)	390-392
Number of pages	3
Journal	Journal of Physical Chemistry
Volume	98
Issue number	2
DOIs	https://doi.org/10.1021/j100053a005
Publication status	Published - 1994 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physical and Theoretical Chemistry

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10.1021/j100053a005

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title = "Unusual adsorption state of CO on Cs-covered Ru(001)",

abstract = "Adsorption of CO on Cs-precovered Ru(001) with one-monolayer coverage (θCs = 0.33) has been investigated by use of electron energy loss spectroscopy (EELS), temperature-programmed desorption (TPD), and low-energy electron diffraction (LEED). The C-O stretching mode of the adsorbed CO does not appear in the specular mode of EELS but clearly appears in the off-specular mode at an unusually low frequency of 1245 cm-1. This unusual adsorption state has been interpreted in terms of an inclined or a side-on adsorption geometry of CO and formation of a double-layer structure (Cs/Cs + CO/Ru(001)) where the CO dipole is screened by the second-layer Cs.",

author = "H. Kondoh and H. Nozoye",

year = "1994",

month = jan,

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doi = "10.1021/j100053a005",

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T1 - Unusual adsorption state of CO on Cs-covered Ru(001)

AU - Kondoh, H.

AU - Nozoye, H.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Adsorption of CO on Cs-precovered Ru(001) with one-monolayer coverage (θCs = 0.33) has been investigated by use of electron energy loss spectroscopy (EELS), temperature-programmed desorption (TPD), and low-energy electron diffraction (LEED). The C-O stretching mode of the adsorbed CO does not appear in the specular mode of EELS but clearly appears in the off-specular mode at an unusually low frequency of 1245 cm-1. This unusual adsorption state has been interpreted in terms of an inclined or a side-on adsorption geometry of CO and formation of a double-layer structure (Cs/Cs + CO/Ru(001)) where the CO dipole is screened by the second-layer Cs.

AB - Adsorption of CO on Cs-precovered Ru(001) with one-monolayer coverage (θCs = 0.33) has been investigated by use of electron energy loss spectroscopy (EELS), temperature-programmed desorption (TPD), and low-energy electron diffraction (LEED). The C-O stretching mode of the adsorbed CO does not appear in the specular mode of EELS but clearly appears in the off-specular mode at an unusually low frequency of 1245 cm-1. This unusual adsorption state has been interpreted in terms of an inclined or a side-on adsorption geometry of CO and formation of a double-layer structure (Cs/Cs + CO/Ru(001)) where the CO dipole is screened by the second-layer Cs.

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DO - 10.1021/j100053a005

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SP - 390

EP - 392

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 2

ER -

Unusual adsorption state of CO on Cs-covered Ru(001)

Abstract

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