Catalysis Letters

, Volume 20, Issue 3–4, pp 269–274 | Cite as

The encapsulation of Fe on TiO2(110)

  • Jian-Mei Pan
  • Theodore E. Madey
Article

Abstract

We report evidence in this letter for the encapsulation of Fe clusters supported by single crystal TiO2. After thermal annealing in ultrahigh vacuum (UHV) at 500–700 ° C for several hours, Fe clusters are almost completely covered by Ti suboxides TiOx while Fe remains mainly in the metallic state. The phenomenon can be clearly measured using LETS (low energy ion scattering) and XPS (X-ray photoelectron spectroscopy).

Keywords

Iron titanium dioxide ultrathin films SMSI 

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References

  1. [1]
    G.L. Haller and D.E. Resasco, Adv. Catal. 36 (1989) 173.Google Scholar
  2. [2]
    V.E. Henrich, Rep. Prog. Phys. 48 (1985) 1481.Google Scholar
  3. [3]
    S.J. Tauster, S.C. Fung and R.L. Garten, J. Am. Chem. Soc. 100 (1978) 170.Google Scholar
  4. [4]
    D.E. Resasco and G.L. Haller, J. Catal. 82 (1983) 279.Google Scholar
  5. [5]
    H.R. Sadeghi and V.E. Henrich, Appl. Surf. Sci. 19 (1984) 330.Google Scholar
  6. [6]
    B.J. Tatarchuk and J.A. Dumesic, J. Catal. 70 (1981) 335.Google Scholar
  7. [7]
    S. Takatani and Y.-W. Chung, J. Catal. 90 (1984) 75.Google Scholar
  8. [8]
    J.-M. Pan and T.E. Madey, J. Vac. Sci. Technol. A11 (4) (1993).Google Scholar
  9. [9]
    J.-M. Pan, B.L. Maschhoff, U. Diebold and T.E. Madey, J. Vac. Sci. Technol. A10 (4) (1992).Google Scholar
  10. [10]
    E. Taglauer, ed.,Ion Scattering Spectroscopy (Plenum Press, New York).Google Scholar
  11. [11]
    E. Taglauer and W. Heiland,Proc. 7th Int. Vac. Congr. and 3rd Int. Conf. Solid Surface, ed. R. Dobrozemsky (Vienna, 1977).Google Scholar
  12. [12]
    B.L. Maschhoff, J.-M. Pan and T.E. Madey, Surf. Sci. 259 (1991) 190.Google Scholar
  13. [13]
    S. Tougaard, Surf. Sci. 162 (1985) 875.Google Scholar
  14. [14]
    S.O. Saied, J.L. Sullivan, T. Choudhury and C.D. Pearce, Vacuum 38 (1988) 917.Google Scholar
  15. [15]
    W. Göpel, J.A. Anderson, D. Frankel, M. Jaehnig, K. Phillips, J.A. Schafer and G. Rocker, Surf. Sci. 139 (1984) 333.Google Scholar
  16. [16]
    J.-M. Pan, U. Diebold, L. Zhang and T.E. Madey, Surf. Sci., submitted.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • Jian-Mei Pan
    • 1
  • Theodore E. Madey
    • 1
  1. 1.Department of Physics and Astronomy, Laboratory for Surface Modification, RutgersThe State University of New JerseyPiscatawayUSA

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