SERS Investigation of Interfacial Methanol at Silver Electrodes*

Raymond L. Sobocinski, Jeanne E. Pemberton

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Interfacial solvent structure at Ag electrodes in methanol electrolyte systems has been studied by using surface-enhanced Raman scattering (SERS). The potential dependence of the SERS response suggests that methanol interacts with Ag electrodes through the oxygen end of the molecule. At all potentials studied, the C-0 bond appears to remain largely parallel to the surface. It is proposed that at potentials positive of the PZC only one oxygen p-orbital is directed toward the Ag surface. Near the PZC, it is postulated that two methanol orientations are detected simultaneously in the presence of Li+. Evidence is presented for the influence of supporting electrolyte cation and anion on the orientation of methanol at these electrodes.

Original languageEnglish (US)
Pages (from-to)43-50
Number of pages8
JournalLangmuir
Volume6
Issue number1
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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