A multitechnique surface analysis study of the adsorption of H2, CO and O2 on Bi Pt(111) surfaces

Mark T. Paffett; Charles T. Campbell; Rebecca G. Windham; Bruce E. Koel

doi:10.1016/0039-6028(89)90124-6

A multitechnique surface analysis study of the adsorption of H₂, CO and O₂ on Bi Pt(111) surfaces

Mark T. Paffett, Charles T. Campbell, Rebecca G. Windham, Bruce E. Koel

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

35 Scopus citations

Abstract

The interactions of H₂, CO and O₂ on Bi-precovered Pt(111) surfaces have been examined using temperature programmed desorption (TPD), Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED). For H₂ and CO, Bi predominantly acts as a laterally dispersed, inert site blocker. Oxygen adsorption on Bi Pt(111) surfaces is considerably more complex, with significant enhancement of O₂ dissociation at 100 K for both low (< 5 L) and higher O₂ exposures. The data for CO and oxygen coadsorption with Bi is further examined to give some insight into the nature of lateral interactions in these adlayers. Electronic influences of Bi on adsorption energies are observed, but these are small in magnitude ( ≤ 1 kcal mol).

Original language	English (US)
Pages (from-to)	274-296
Number of pages	23
Journal	Surface Science
Volume	207
Issue number	2-3
DOIs	https://doi.org/10.1016/0039-6028(89)90124-6
State	Published - Jan 1 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(89)90124-6

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@article{a70e78d69419484e886da00fdb9a2947,

title = "A multitechnique surface analysis study of the adsorption of H2, CO and O2 on Bi Pt(111) surfaces",

abstract = "The interactions of H2, CO and O2 on Bi-precovered Pt(111) surfaces have been examined using temperature programmed desorption (TPD), Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED). For H2 and CO, Bi predominantly acts as a laterally dispersed, inert site blocker. Oxygen adsorption on Bi Pt(111) surfaces is considerably more complex, with significant enhancement of O2 dissociation at 100 K for both low (< 5 L) and higher O2 exposures. The data for CO and oxygen coadsorption with Bi is further examined to give some insight into the nature of lateral interactions in these adlayers. Electronic influences of Bi on adsorption energies are observed, but these are small in magnitude ( ≤ 1 kcal mol).",

author = "Paffett, {Mark T.} and Campbell, {Charles T.} and Windham, {Rebecca G.} and Koel, {Bruce E.}",

note = "Funding Information: Support by the Department of Energy, through the Morgantown Energy Technology Center Phosphoric Acid Fuel Program, is gratefully acknowledged by M.T.P. Acknowledgement is made by C.T.C. to the Donors of the Petroleum Research Fund, administered by the American Chemical Society for partial support of this work. Support of this work by the US Department of Energy, Office of Basic Energy Sciences, Chemical Sciences Division is gratefully acknowledged by B.E.K. Helpful discussions with TN. Taylor are a pleasure to acknowledge.",

year = "1989",

month = jan,

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doi = "10.1016/0039-6028(89)90124-6",

language = "English (US)",

volume = "207",

pages = "274--296",

journal = "Surface Science",

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publisher = "Elsevier B.V.",

number = "2-3",

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T1 - A multitechnique surface analysis study of the adsorption of H2, CO and O2 on Bi Pt(111) surfaces

AU - Paffett, Mark T.

AU - Campbell, Charles T.

AU - Windham, Rebecca G.

AU - Koel, Bruce E.

N1 - Funding Information: Support by the Department of Energy, through the Morgantown Energy Technology Center Phosphoric Acid Fuel Program, is gratefully acknowledged by M.T.P. Acknowledgement is made by C.T.C. to the Donors of the Petroleum Research Fund, administered by the American Chemical Society for partial support of this work. Support of this work by the US Department of Energy, Office of Basic Energy Sciences, Chemical Sciences Division is gratefully acknowledged by B.E.K. Helpful discussions with TN. Taylor are a pleasure to acknowledge.

PY - 1989/1/1

Y1 - 1989/1/1

N2 - The interactions of H2, CO and O2 on Bi-precovered Pt(111) surfaces have been examined using temperature programmed desorption (TPD), Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED). For H2 and CO, Bi predominantly acts as a laterally dispersed, inert site blocker. Oxygen adsorption on Bi Pt(111) surfaces is considerably more complex, with significant enhancement of O2 dissociation at 100 K for both low (< 5 L) and higher O2 exposures. The data for CO and oxygen coadsorption with Bi is further examined to give some insight into the nature of lateral interactions in these adlayers. Electronic influences of Bi on adsorption energies are observed, but these are small in magnitude ( ≤ 1 kcal mol).

AB - The interactions of H2, CO and O2 on Bi-precovered Pt(111) surfaces have been examined using temperature programmed desorption (TPD), Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED). For H2 and CO, Bi predominantly acts as a laterally dispersed, inert site blocker. Oxygen adsorption on Bi Pt(111) surfaces is considerably more complex, with significant enhancement of O2 dissociation at 100 K for both low (< 5 L) and higher O2 exposures. The data for CO and oxygen coadsorption with Bi is further examined to give some insight into the nature of lateral interactions in these adlayers. Electronic influences of Bi on adsorption energies are observed, but these are small in magnitude ( ≤ 1 kcal mol).

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VL - 207

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JO - Surface Science

JF - Surface Science

IS - 2-3

ER -

A multitechnique surface analysis study of the adsorption of H₂, CO and O₂ on Bi Pt(111) surfaces

Abstract

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