Novel surface-enhanced Raman scattering-active silver substrates containing visible light-responsible Tio2 nanoparticles

Yu Chuan Liu, Chung Chin Yu, Cheng Cai Wang

研究成果: 雜誌貢獻文章同行評審

12 引文 斯高帕斯(Scopus)

摘要

We report here the first electrochemically prepared surface-enhanced Raman scattering (SERS)-active silver substrates containing visible light-responsible TiO2 nanoparticles. The SERS-active Ag substrates with TiO 2 nanoparticles were prepared by roughening the substrates using electrochemical oxidation-reduction cycles (ORC) in 0.1 M HCl aqueous solutions containing 1 mM visible light-responsible TiO2 nanoparticles. Based on these prepared substrates, the SERS of Rhodamine 6G (R6G) exhibits a higher intensity by one order of magnitude, as compared with that of R6G adsorbed on a roughened Ag substrate without TiO2 nanoparticles. Moreover, the practical limit of detection (LOD) of R6G can be reduced by five orders of magnitude from 2 × 10-10 to 2 × 10-15 M owning to the additional contribution of TiO2 nanoparticles to the whole SERS effects.

原文英語
頁(從 - 到)2120-2124
頁數5
期刊Journal of Materials Chemistry
17
發行號20
DOIs
出版狀態已發佈 - 2007
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學
  • 材料化學
  • 材料科學(全部)

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