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Enhanced Raman Scattering from Molecules Adsorbed on Small Nickel Particles

  • W. Krasser

Abstract

We have investigated the Raman enhancement of simple molecules like benzene, coadsorbed benzene and hydrogen, carbon monoxide, ethylene, coadsorbed carbon monoxide and hydrogen, which are bonded to the surfacé of small nickel particles. The enhancement depends strongly on the structure and diameter of the particles and on the excitation wavelength. The maximum of the enhancement is generally observed in the wavelength range of 5200 Å – 4500 Å and is about 103 –104 compared with those wavelengths, where no enhancement could be measured. If there exist several surface species or if chemical reactions take place on the surface, the spectra of all chemisorbed molecules are enhanced in the same way.

Keywords

Vibrational Spectrum Surface Species Active Vibration Simple Molecule Raney Nickel 
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References

  1. 1.
    P.L. Jeanmarie and R.P. van Duyne, J. Electroanal. Chem. 84, 1 (1977).CrossRefGoogle Scholar
  2. 2.
    R.E. Furtak, Surf. Sci. 93, 351 (1980).CrossRefGoogle Scholar
  3. 3.
    J.A. Creighton, C.G. Blatchford and M.G. Albrecht, J.C.S. Farad. Trans. II, 75, 790 (1979).CrossRefGoogle Scholar
  4. 4.
    J.R. Kirtley, J.C. Tsang, T.N. Theis and S.S. Jha, Proc. VII th International Conference on Raman Spectroscopy, Ottawa, 1980, North Holland.Google Scholar
  5. 5.
    A. Otto, Surf. Sci. 75, 392 (1978).CrossRefGoogle Scholar
  6. 6.
    W. Krasser, H. Ervens, A. Fadini and A.J. Renouprez, J. Raman Spectr. 9, 80 (1980).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • W. Krasser
    • 1
  1. 1.Institut für FestkörperforschungKFA JülichJülich 1West Germany

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