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

J. L. Grant, T. B. Fryberger, Peter C Stair

Research output: Contribution to journalArticle

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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 languageEnglish
Pages (from-to)127-134
Number of pages8
JournalSurface Science
Volume239
Issue number1-2
DOIs
Publication statusPublished - Dec 1 1990

Fingerprint

Propylene
Oxygen
Adsorption
adsorption
oxygen
Binding energy
orbitals
binding energy
Lewis Acids
Electrons
Chemical bonds
shift
Adsorbates
chemical bonds
Electronic structure
electrons
electronic structure
acids
Molecules
Acids

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Adsorption of ethene, propene and 3,3,3-trifluoropropene on oxygen modified Mo(100) surfaces studied by UPS. / Grant, J. L.; Fryberger, T. B.; Stair, Peter C.

In: Surface Science, Vol. 239, No. 1-2, 01.12.1990, p. 127-134.

Research output: Contribution to journalArticle

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