Electronic structures in the valence region of chemisorbed and physisorbed species on Pd(110)

Jun Yoshinobu; Maki Kawai; Shin Ichiro Tanaka; Kazuo Watanabe; Yoshiyasu Matsumoto; Masao Kamada

doi:10.1016/s0368-2048(97)00243-0

Electronic structures in the valence region of chemisorbed and physisorbed species on Pd(110)

Jun Yoshinobu, Maki Kawai, Shin Ichiro Tanaka, Kazuo Watanabe, Yoshiyasu Matsumoto, Masao Kamada

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Electronic structures of CO, CH₄ and Xe on Pd(110) were studied by means of photoelectron spectroscopy (PES) using synchrotron radiation. In order to enhance the sensitivity for the adsorbate derived states in valence PE spectra, photon energy at the Cooper minimum (hv = 120-130 eV) was utilized. In the case of the CO saturated Pd(110) surface at 90 K, peaks are observed at ∼3.4 eV, 8.0 eV (with a shoulder at ∼7.2eV), 11.0 eV and 14.4 eV below the Fermi level (E_F). In addition to the previously reported peaks (1π and 5σ at ∼8 eV and 4σ at ∼11 eV), two peaks were newly observed. The 3.4 eV peak could be assigned to the bonding state hybridized between CO 2π and Pd 4d orbitals. The 14.4 eV peak is tentatively assigned to the CO 4σ shake-up satellite. In the 'physisorption' systems, i.e. CH₄ and Xe on Pd(110), only the smooth attenuation of photoemission from the Pd 4d-band was observed in the PE spectra.

Original language	English
Pages (from-to)	665-669
Number of pages	5
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	88-91
DOIs	https://doi.org/10.1016/s0368-2048(97)00243-0
Publication status	Published - Mar 1998

Keywords

CH
CO
Chemisorption
Pd(110)
Photoemission
Physisorption
Xe

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10.1016/s0368-2048(97)00243-0

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@article{6afe73a0562047978963e92d8a122e3e,

title = "Electronic structures in the valence region of chemisorbed and physisorbed species on Pd(110)",

abstract = "Electronic structures of CO, CH4 and Xe on Pd(110) were studied by means of photoelectron spectroscopy (PES) using synchrotron radiation. In order to enhance the sensitivity for the adsorbate derived states in valence PE spectra, photon energy at the Cooper minimum (hv = 120-130 eV) was utilized. In the case of the CO saturated Pd(110) surface at 90 K, peaks are observed at ∼3.4 eV, 8.0 eV (with a shoulder at ∼7.2eV), 11.0 eV and 14.4 eV below the Fermi level (EF). In addition to the previously reported peaks (1π and 5σ at ∼8 eV and 4σ at ∼11 eV), two peaks were newly observed. The 3.4 eV peak could be assigned to the bonding state hybridized between CO 2π and Pd 4d orbitals. The 14.4 eV peak is tentatively assigned to the CO 4σ shake-up satellite. In the 'physisorption' systems, i.e. CH4 and Xe on Pd(110), only the smooth attenuation of photoemission from the Pd 4d-band was observed in the PE spectra.",

keywords = "CH, CO, Chemisorption, Pd(110), Photoemission, Physisorption, Xe",

author = "Jun Yoshinobu and Maki Kawai and Tanaka, \{Shin Ichiro\} and Kazuo Watanabe and Yoshiyasu Matsumoto and Masao Kamada",

year = "1998",

month = mar,

doi = "10.1016/s0368-2048(97)00243-0",

language = "English",

volume = "88-91",

pages = "665--669",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electronic structures in the valence region of chemisorbed and physisorbed species on Pd(110)

AU - Yoshinobu, Jun

AU - Kawai, Maki

AU - Tanaka, Shin Ichiro

AU - Watanabe, Kazuo

AU - Matsumoto, Yoshiyasu

AU - Kamada, Masao

PY - 1998/3

Y1 - 1998/3

N2 - Electronic structures of CO, CH4 and Xe on Pd(110) were studied by means of photoelectron spectroscopy (PES) using synchrotron radiation. In order to enhance the sensitivity for the adsorbate derived states in valence PE spectra, photon energy at the Cooper minimum (hv = 120-130 eV) was utilized. In the case of the CO saturated Pd(110) surface at 90 K, peaks are observed at ∼3.4 eV, 8.0 eV (with a shoulder at ∼7.2eV), 11.0 eV and 14.4 eV below the Fermi level (EF). In addition to the previously reported peaks (1π and 5σ at ∼8 eV and 4σ at ∼11 eV), two peaks were newly observed. The 3.4 eV peak could be assigned to the bonding state hybridized between CO 2π and Pd 4d orbitals. The 14.4 eV peak is tentatively assigned to the CO 4σ shake-up satellite. In the 'physisorption' systems, i.e. CH4 and Xe on Pd(110), only the smooth attenuation of photoemission from the Pd 4d-band was observed in the PE spectra.

AB - Electronic structures of CO, CH4 and Xe on Pd(110) were studied by means of photoelectron spectroscopy (PES) using synchrotron radiation. In order to enhance the sensitivity for the adsorbate derived states in valence PE spectra, photon energy at the Cooper minimum (hv = 120-130 eV) was utilized. In the case of the CO saturated Pd(110) surface at 90 K, peaks are observed at ∼3.4 eV, 8.0 eV (with a shoulder at ∼7.2eV), 11.0 eV and 14.4 eV below the Fermi level (EF). In addition to the previously reported peaks (1π and 5σ at ∼8 eV and 4σ at ∼11 eV), two peaks were newly observed. The 3.4 eV peak could be assigned to the bonding state hybridized between CO 2π and Pd 4d orbitals. The 14.4 eV peak is tentatively assigned to the CO 4σ shake-up satellite. In the 'physisorption' systems, i.e. CH4 and Xe on Pd(110), only the smooth attenuation of photoemission from the Pd 4d-band was observed in the PE spectra.

KW - CH

KW - CO

KW - Chemisorption

KW - Pd(110)

KW - Photoemission

KW - Physisorption

KW - Xe

UR - https://www.scopus.com/pages/publications/0041637345

U2 - 10.1016/s0368-2048(97)00243-0

DO - 10.1016/s0368-2048(97)00243-0

M3 - Article

AN - SCOPUS:0041637345

SN - 0368-2048

VL - 88-91

SP - 665

EP - 669

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

Electronic structures in the valence region of chemisorbed and physisorbed species on Pd(110)

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Keywords

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