Influence of drying treatment to electrochemically roughened Ag substrates on the corresponding surface-enhanced Raman scattering performances

Keng Liang Ou, Ting Chu Hsu, Yu Chuan Liu, Kuang Hsuan Yang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

For obtaining metal-island films on substrates with activity of surface-enhanced Raman scattering (SERS), a controllable and reproducible surface roughness can be easily generated by using electrochemical oxidation-reduction cycle (ORC) procedures. However, different preparation procedures could significantly change their corresponding SERS activities. In this study, SERS-active Ag substrates were prepared by using triangular-wave ORC procedures in 0.1 M KCl solutions. Before the adsorptions of probe molecules on these Ag substrates one substrate was further dried in a vacuum-dryer. Interestingly, the SERS activity of this dried Ag substrate is significantly reduced due to this additional treatment. Experimental results indicate that this phenomenon can be ascribed to the correspondingly significant decrease in content of Cl-containing complexes formed on the interface of the roughened Ag metal.

Original languageEnglish
Pages (from-to)892-896
Number of pages5
JournalMaterials Chemistry and Physics
Volume135
Issue number2-3
DOIs
Publication statusPublished - Aug 15 2012

Keywords

  • Ag substrate
  • Drying
  • Electrochemical preparation
  • Surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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