Improved surface-enhanced Raman scattering on optimum electrochemically roughened silver substrates

Yu Chuan Liu, Chung Chin Yu, Sen F. Sheu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In this work, the effects of preparation conditions used in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were first investigated. The optimum roughening conditions for obtaining strongest SERS of Rhodamine 6G (R6G) are as follows. Ag electrodes were cycled in deoxygenated aqueous solutions containing 0.1 M NaCl from -0.3 to +0.2 V versus Ag/AgCl at 25 mV s-1 for five scans. The SERS of R6G adsorbed on this optimum procedure-prepared roughened Ag substrate exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a normally roughened Ag substrate.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalAnalytica Chimica Acta
Volume577
Issue number2
DOIs
Publication statusPublished - Sep 8 2006
Externally publishedYes

Keywords

  • Ag substrates
  • Oxidation-reduction cycles
  • Surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

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