Improved surface-enhanced Raman scattering performances on silver-silica nanocomposites

Yu Chuan Liu, Kuang Hsuan Yang, Ting C. Hsu

研究成果: 雜誌貢獻文章同行評審

29 引文 斯高帕斯(Scopus)

摘要

In this work, surface-enhanced Raman scattering (SERS)-active silver substrates were prepared by electrochemical methods via oxidation-reduction cycles. These SERS-active substrates were further modified with different contents of SiO2 nanoparticles to improve their corresponding SERS performances. With the modified substrate prepared in a 0.1 mM SiO2 solution, the SERS of Rhodamine 6G (R6G) exhibits a higher intensity by a 3-fold order of magnitude as compared with that of R6G adsorbed on a SERS-active Ag substrate without the incorporation of SiO2 nanoparticles. Moreover, the modified substrate prepared in a 1 mM SiO2 solution can improve the thermal stability of the SERS-active Ag substrate. The operation temperature of the modified Ag substrate can be raised by 50 °C. The aging SERS intensity is also depressed on this modified Ag substrate due to the contribution of SiO2 nanoparticles to SERS effects.

原文英語
頁(從 - 到)8162-8168
頁數7
期刊Journal of Physical Chemistry C
113
發行號19
DOIs
出版狀態已發佈 - 五月 14 2009
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學
  • 能源(全部)
  • 電子、光磁材料
  • 表面、塗料和薄膜

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