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Characterization of a Ag Monolayer on Pt by Surface Enhanced Raman Scattering

Published online by Cambridge University Press:  25 February 2011

Joseph Miragliotta  and
T. E. Furtak
Joseph Miragliotta
Affiliation:
Physics Department Colorado School of Mines Golden, CO 80401
T. E. Furtak
Affiliation:
Physics Department Colorado School of Mines Golden, CO 80401
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Abstract

We report the results of a surface enhanced Raman scattering investigation of a Ag monolayer (ML) electrochemically deposited on a Pt substrate. The poor electromagnetic enhancing properties of this surface insure that the observed Raman scattering intensity is short–range in origin, arising from an electronic resonant process between the surface adatom and the probe molecule. Raman spectra showed the probe molecule, pyridine, to be bound to an electron-deficient Ag site. This supports earlier vacuum studies of the Ag/Pt surface which reported an electron transfer from the Ag ML into the Pt substrate leaving a partial positive charge in the ML. The transfer is due to the work function difference between Ag and Pt.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 83: Symposium J – Physical and Chemical Properties of Thin Metal Overlayers and Alloy Surfaces , 1986 , 123
Copyright
Copyright © Materials Research Society 1987

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References

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