Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS

J. L. Grant; T. B. Fryberger; P. C. Stair

doi:10.1016/0039-6028(90)90624-H

Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS

J. L. Grant^*, T. B. Fryberger, P. C. Stair

^*Corresponding author for this work

Chemistry

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

8 Scopus citations

Abstract

Adsorption of ethene, propene and 3,3,3-trifluoropropene on Mo(100) surfaces modified by 0.9-1.1 ML of oxygen was studied by UPS. Ethene and propene molecularly adsorb to oxygen modified Mo(100). The binding energy shift in the π-orbital of both molecules is consistent with bonding by π-electron donation to surface Lewis acid sites. Molecular adsorption of CF₃CHCH₂ produces a π-orbital shift to lower binding energy. This observation along with the calculated electronic structure of CF₃CHCH₂ is interpreted as evidence for a surface chemical bond dominated by backdonation of electrons from the surface to unoccupied π^*-orbitals on the adsorbate.

Original language	English (US)
Pages (from-to)	127-134
Number of pages	8
Journal	Surface Science
Volume	239
Issue number	1-2
DOIs	https://doi.org/10.1016/0039-6028(90)90624-H
State	Published - Dec 1 1990

Funding

This researchw as supportedb y the National Science Foundation under Grant CHE-8206104. The measurementws ere performedi n the Surface Science Facility of Northwestern University’s Materials ResearchC enter, supportedi n part under the NSF-MRL Program (Grant DMR-8216972).H elpful discussions with Dr. Y.-W. Chung are gratefullya cknowledged.

ASJC Scopus subject areas

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

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10.1016/0039-6028(90)90624-H

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@article{9728f9ecbf9a467687ea081ec84b75cb,

title = "Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS",

abstract = "Adsorption of ethene, propene and 3,3,3-trifluoropropene on Mo(100) surfaces modified by 0.9-1.1 ML of oxygen was studied by UPS. Ethene and propene molecularly adsorb to oxygen modified Mo(100). The binding energy shift in the π-orbital of both molecules is consistent with bonding by π-electron donation to surface Lewis acid sites. Molecular adsorption of CF3CHCH2 produces a π-orbital shift to lower binding energy. This observation along with the calculated electronic structure of CF3CHCH2 is interpreted as evidence for a surface chemical bond dominated by backdonation of electrons from the surface to unoccupied π*-orbitals on the adsorbate.",

author = "Grant, \{J. L.\} and Fryberger, \{T. B.\} and Stair, \{P. C.\}",

note = "Funding Information: This researchw as supportedb y the National Science Foundation under Grant CHE-8206104. The measurementws ere performedi n the Surface Science Facility of Northwestern University{\textquoteright}s Materials ResearchC enter, supportedi n part under the NSF-MRL Program (Grant DMR-8216972).H elpful discussions with Dr. Y.-W. Chung are gratefullya cknowledged.",

year = "1990",

month = dec,

day = "1",

doi = "10.1016/0039-6028(90)90624-H",

language = "English (US)",

volume = "239",

pages = "127--134",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS

AU - Grant, J. L.

AU - Fryberger, T. B.

AU - Stair, P. C.

N1 - Funding Information: This researchw as supportedb y the National Science Foundation under Grant CHE-8206104. The measurementws ere performedi n the Surface Science Facility of Northwestern University’s Materials ResearchC enter, supportedi n part under the NSF-MRL Program (Grant DMR-8216972).H elpful discussions with Dr. Y.-W. Chung are gratefullya cknowledged.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - Adsorption of ethene, propene and 3,3,3-trifluoropropene on Mo(100) surfaces modified by 0.9-1.1 ML of oxygen was studied by UPS. Ethene and propene molecularly adsorb to oxygen modified Mo(100). The binding energy shift in the π-orbital of both molecules is consistent with bonding by π-electron donation to surface Lewis acid sites. Molecular adsorption of CF3CHCH2 produces a π-orbital shift to lower binding energy. This observation along with the calculated electronic structure of CF3CHCH2 is interpreted as evidence for a surface chemical bond dominated by backdonation of electrons from the surface to unoccupied π*-orbitals on the adsorbate.

AB - Adsorption of ethene, propene and 3,3,3-trifluoropropene on Mo(100) surfaces modified by 0.9-1.1 ML of oxygen was studied by UPS. Ethene and propene molecularly adsorb to oxygen modified Mo(100). The binding energy shift in the π-orbital of both molecules is consistent with bonding by π-electron donation to surface Lewis acid sites. Molecular adsorption of CF3CHCH2 produces a π-orbital shift to lower binding energy. This observation along with the calculated electronic structure of CF3CHCH2 is interpreted as evidence for a surface chemical bond dominated by backdonation of electrons from the surface to unoccupied π*-orbitals on the adsorbate.

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U2 - 10.1016/0039-6028(90)90624-H

DO - 10.1016/0039-6028(90)90624-H

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AN - SCOPUS:5644293235

SN - 0039-6028

VL - 239

SP - 127

EP - 134

JO - Surface Science

JF - Surface Science

IS - 1-2

ER -

Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS

Abstract

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