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  TDS study of the bonding of CO and NO to vacuum-cleaved NiO(100)

Wichtendahl, R., Rodriguez-Rodrigo, M., Härtel, U., Kuhlenbeck, H., & Freund, H.-J. (1999). TDS study of the bonding of CO and NO to vacuum-cleaved NiO(100). Surface Science, 423(1), 90-98. doi:10.1016/S0039-6028(98)00915-7.

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 Creators:
Wichtendahl, Ralph1, Author           
Rodriguez-Rodrigo, M.1, Author
Härtel, U.1, Author
Kuhlenbeck, Helmut2, Author           
Freund, Hans-Joachim2, Author           
Affiliations:
1Fritz Haber Institute, Max Planck Society, ou_24021              
2Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              

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 Abstract: Using thermal desorption spectroscopy (TDS) we have determined the adsorption enthalpies of NO and CO on a NiO(100) surface obtained by cleavage of a NiO single crystal rod under ultra-high vacuum (UHV) conditions. The TDS data have been evaluated using the leading edge method and complete analysis, yielding values of 0.30±0.04 and 0.57±0.04 eV for the heats of adsorption of CO and NO, respectively, in the low coverage regime. These values decrease with increasing coverage down to the respective multilayer values. The results obtained experimentally are different from the theoretical ones, in that the experimental values are systematically larger. This is possibly due to the influence of the Ni3d electrons as concluded from a comparison with TDS data for CO on vacuum-cleaved MgO(100). The adsorbate bonding energies obtained for vacuum-cleaved NiO(100) are in good agreement with values for thin NiO(100) films deduced from thermal-desorption studies and infrared investigations.

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Language(s): eng - English
 Dates: 1998-08-271998-11-241999-03-01
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/S0039-6028(98)00915-7
 Degree: -

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Title: Surface Science
  Abbreviation : Surf. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: 9 Volume / Issue: 423 (1) Sequence Number: - Start / End Page: 90 - 98 Identifier: ISSN: 0039-6028
CoNE: https://pure.mpg.de/cone/journals/resource/0039-6028