Raman spectroscopy at metal electrodes

Pettinger, Bruno; Friedrich, A.; Tiedemann, U.

doi:10.1016/0022-0728(90)87083-V

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Raman spectroscopy at metal electrodes

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Pettinger, Bruno
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Friedrich, A.
Fritz Haber Institute, Max Planck Society;

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Tiedemann, U.
Fritz Haber Institute, Max Planck Society;

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Pettinger, B., Friedrich, A., & Tiedemann, U. (1990). Raman spectroscopy at metal electrodes. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 280(1), 49-59. doi:10.1016/0022-0728(90)87083-V.

Cite as: https://hdl.handle.net/21.11116/0000-0008-62FC-E

Abstract

Unlike a silver surface, platinum does not provide surface enhancement for optical processes. Hence, Raman scattering for adsorbates at this surface, in particular in-situ Raman scattering, can be monitored only in the case of resonantly enhanced Raman processes or with significantly improved spectrometer systems. A realistic estimation of surface Raman intensities reveals, not unexpectedly, that in-situ normal Raman scattering at electrodes requires a sufficient discrimination of the light scattering by the bulk electrolyte together with a remarkable increase of the detection efficiency. Several ways to meet these prerequisites are sketched and preliminary results are presented, among them, for the first time, in-situ Raman scattering for ClO₄⁻ ions at smooth Pt electrodes.