SERS and SEM of Roughened Silver Electrode Surfaces Formed by Controlled Oxidation-Reduction in Aqueous Chloride Media

David D. Tuschel, Jeanne E. Pemberton, Joseph E. Cook

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The SERS intensity of specifically adsorbed Cl-ions at Ag electrodes whose surface morphologies vary dramatically has been investigated. Reasonable control of the Ag electrode surface morphology is afforded by the controlled electrochemical rate of oxidation and reduction of the Ag surface prior to SERS experiments. Scanning electron microscopy is used to determine surface morphology on these electrodes of varying roughness. It is found that the SERS intensity increases as the diameter of the surface roughness features decreases and the two-dimensional surface concentration of roughness features increases. These observations are in general agreement with theoretical predictions based on an electromagnetic enhancement model for SERS.

Original languageEnglish (US)
Pages (from-to)380-388
Number of pages9
JournalLangmuir
Volume2
Issue number4
DOIs
StatePublished - Jan 1 1986

ASJC Scopus subject areas

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

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