Structure of small palladium particles studied by HRTEM

  • C. E. Henry
  • C. Chapon
  • J. M. Penisson
  • G. Nihoul
Conference paper

Abstract

The structure of small palladium particles is investigated by HRTEM in order to know if structural variations, as a function of particles size, could explain some of the size effects encountered in heterogeneous catalysis. Small Pd particles are obtained by vacuum deposition on epitaxial MgO thin films. Imaging of the atomic planes down to a particle diameter of 1.8 nm shows that the particles are (100) (mainly) or (110) oriented on the substrate. Smallest particles (<2.5nm) are perfectly fcc while some multiply-twinned particles are observed only for larger sizes.

PACS

61.16.Di 61.14.Hg 

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References

  1. 1.
    Bond, G.C.: Surf. Sci. 156, 966 (1985).ADSCrossRefGoogle Scholar
  2. 2.
    Anderson, J.R.: Sci. Prog. 69, 461 (1985).Google Scholar
  3. 3.
    Farges, J., de Feraudy, M.F., Raoult, B., Torchet, G.: J. Chem. Phys. 78, 5067 (1983).ADSCrossRefGoogle Scholar
  4. 4.
    Gillet, M.: Surf. Sci. 67, 139 (1977).ADSCrossRefGoogle Scholar
  5. 5.
    Burton, J.J.: Catal. Rev. Sei. Eng. 9, 209 (1974).CrossRefGoogle Scholar
  6. 6.
    Reichelt, K.: J. Cryst. Growth 19, 258 (1973).ADSCrossRefGoogle Scholar
  7. 7.
    Heinemann, K., Poppa, H.: Surf. Sci. 156, 265 (1985).ADSCrossRefGoogle Scholar
  8. 8.
    De Crescenzi, M., Diociaiuti, M., Lozzi, L., Picozzi, P., Santucci, S.: Phys. Rev. B 35, 5997 (1987).ADSCrossRefGoogle Scholar
  9. 9.
    Jacobs, J.W., Schryvers, D.: J. Catal. 103, 436 (1987).CrossRefGoogle Scholar
  10. 10.
    Woltersdorf, J., Nepijko, A.S., Pippel, E.: Surf. Sci. 106, 64 (1981).ADSCrossRefGoogle Scholar
  11. 11.
    Monosmith, W.B., Cowley, J.M.: Ultramicroscopy 12, 177 (1984).CrossRefGoogle Scholar
  12. 12.
    Balerna, A., Bernieri, E., Picozzi, P., Reale, A., Santucci, S., Burattini, E., Mobilio, S.: Phys. Rev. B 31, 5058 (1985).ADSCrossRefGoogle Scholar
  13. 13.
    Henry, C.R., Chapon, C, Mutaftschiev, B.: Thin Solid Films 46, 157 (1977).ADSCrossRefGoogle Scholar
  14. 14.
    Gao, P., Gleiter, H.: Acta Metall. 35, 1571 (1987).CrossRefGoogle Scholar
  15. 15.
    Chapon, C, Henry, C.R.: Surf. Sci. 106, 152 (1981).ADSCrossRefGoogle Scholar
  16. 16.
    Métois, J.J, Zanghi, J.C., Erre, R., Kern, R.: Thin Solid Films 22, 331 (1974).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • C. E. Henry
    • 1
  • C. Chapon
    • 1
  • J. M. Penisson
    • 2
  • G. Nihoul
    • 3
  1. 1.Campus de Luminy, case 913CRMC2-CNRSMarseille Cedex 9France
  2. 2.CENG-DRF 85XGrenoble CedexFrance
  3. 3.Université de ToulonLagardeFrance

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