Low concentration rhodamine 6G observed by surface-enhanced Raman scattering on optimally electrochemically roughened silver substrates

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

研究成果: 雜誌貢獻文章

53 引文 (Scopus)

摘要

In this work, the effects of preparation conditions in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were investigated. Based on this prepared substrate, the practical limit of detection (LOD) of rhodamine 6G (R6G) can be reduced by six orders of magnitude from 2 × 10-9 to 2 × 10-15 M, as compared with that of R6G adsorbed on a general procedure-prepared roughened Ag substrate. Further investigations indicate that the content and the oxidation state of Cl on the roughened Ag substrate demonstrate decided effects on the observed SERS.

原文英語
頁(從 - 到)3546-3551
頁數6
期刊Journal of Materials Chemistry
16
發行號35
DOIs
出版狀態已發佈 - 2006
對外發佈Yes

指紋

rhodamine
Silver
Raman scattering
low concentrations
silver
Raman spectra
Substrates
oxidation
Oxidation
preparation
cycles
rhodamine 6G

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Materials Chemistry

引用此文

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AU - Liu, Yu Chuan

AU - Yu, Chung Chin

AU - Sheu, Sen F.

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AB - In this work, the effects of preparation conditions in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were investigated. Based on this prepared substrate, the practical limit of detection (LOD) of rhodamine 6G (R6G) can be reduced by six orders of magnitude from 2 × 10-9 to 2 × 10-15 M, as compared with that of R6G adsorbed on a general procedure-prepared roughened Ag substrate. Further investigations indicate that the content and the oxidation state of Cl on the roughened Ag substrate demonstrate decided effects on the observed SERS.

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