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Oxidation of palladium: from single crystal surfaces towards nanoparticles

  • Andreas Stierle
Published/Copyright: June 11, 2013
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Abstract

This overview highlights recent results on the oxidation of Pd obtained on low-index and vicinal single crystal surfaces as well as epitaxial Pd nanoparticles on MgO(100). The emphasis is put on X-ray diffraction experiments, which were conducted in-situ during oxidation at elevated temperatures and near atmospheric pressure. On Pd(100) the formation of an ultrathin surface oxide layer with a superstructure was observed. This layer represents a considerable kinetic barrier against PdO bulk oxide formation. A similar surface oxide forms on the Pd(553) vicinal surface after oxygen-induced faceting into (332) and (111) oriented areas. In contrast to this, Pd nanoparticles on MgO(100) below a diameter of 10 nm undergo continuous oxidation without passivation layer formation, pointing to a much higher reactivity and a lowering of kinetic barriers. These differences in the oxidation behavior give evidence for a breakdown of classical oxidation theory on the nanoscale.


* Correspondence address, Andreas Stierle Max-Planck-Institut für Metallforschung Heisenbergstr. 3, D-70569 Stuttgart, Germany Tel.: +49 711 689 1842 Fax: +49 711 689 1902 E-mail:

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Received: 2009-5-29
Accepted: 2009-7-25
Published Online: 2013-06-11
Published in Print: 2009-10-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Introduction
  4. Introduction
  5. G. Petzow: Laudation for Peter Paul Schepp
  6. Dr. Schepp's retirement after 20 years of service was celebrated
  7. Preface to Feature Articles
  8. “SURFACE and INTERFACE ENGINEERING”
  9. Feature
  10. Thermodynamics of reactions and phase transformations at interfaces and surfaces
  11. Oxidation of palladium: from single crystal surfaces towards nanoparticles
  12. On the high-temperature oxidation of MCrAlY coatings
  13. Conducting polymers for corrosion protection: a review
  14. Fundamental and applied aspects of laser surface engineering
  15. Low-temperature gaseous surface hardening of stainless steel: the current status
  16. Foreword
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  18. Editorial
  19. The scientific work of Charles Crussard (1916–2008)
  20. Review
  21. Charles Crussard's early contributions: Recrystallization in situ and a Grain Boundary study with J. Friedel and B. Cullity
  22. Magnetohydrodynamics applied to materials processing
  23. Charles Crussard's contribution to sheet metal forming and participation in IDDRG
  24. Glide of dislocations in non-octahedral planes of fcc metals: a review
  25. The deformation stage II of face-centered cubic crystals: Fifty years of investigations
  26. Nucleation and growth during primary recrystallization of certain metals and alloys with a face-centered cubic structure: Formation of the cube texture
  27. Basic
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  29. Application of cluster dynamics modeling to the precipitation in aluminum alloys
  30. On the effect of pre-recovery on subsequent recrystallization
  31. The interplay between grain boundaries and disclinations in condensed matter physics
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  33. Thermoelectric power applied to metallurgy: principle and recent applications
  34. Notifications
  35. People
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