Surface-enhanced Raman scattering-active silver substrates electrochemically prepared in solutions containing bielectrolytes

Chun Chao Chang, Ting Chu Hsu, Yu Chuan Liu, Kuang Hsuan Yang

研究成果: 雜誌貢獻文章同行評審

13 引文 斯高帕斯(Scopus)

摘要

In the electrochemical oxidation-reduction cycles (ORC) treatment for preparing surface-enhanced Raman scattering (SERS)-active substrates, chloride electrolyte was generally selected because this facilitates the metal dissolution-deposition process that is known to produce SERS-active roughened surfaces. In this work, SERS-active Ag substrates were electrochemically prepared in HCl solutions containing supplemental electrolytes of HNO 3. Encouragingly, the SERS of Rhodamine 6G (R6G) adsorbed on this developed Ag substrate exhibits a higher intensity by 15-fold of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate prepared in HCl solution. Moreover, limit of detection for probe molecules of R6G can be significantly reduced to 2 × 10 -15 M. Also, the significant improvements in thermal stability and anti-aging of SERS-active Ag substrates proposed in this work are observed.

原文英語
頁(從 - 到)6660-6667
頁數8
期刊Journal of Materials Chemistry
21
發行號18
DOIs
出版狀態已發佈 - 五月 14 2011

ASJC Scopus subject areas

  • 材料化學
  • 化學 (全部)

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