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

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

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)8162-8168
Number of pages7
JournalJournal of Physical Chemistry C
Volume113
Issue number19
DOIs
Publication statusPublished - May 14 2009
Externally publishedYes

Fingerprint

Silver
Silicon Dioxide
Raman scattering
Nanocomposites
nanocomposites
silver
Silica
Raman spectra
silicon dioxide
Substrates
Nanoparticles
rhodamine
nanoparticles
Thermodynamic stability
thermal stability
Aging of materials
oxidation
cycles

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Energy(all)
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

Cite this

Improved surface-enhanced Raman scattering performances on silver-silica nanocomposites. / Liu, Yu Chuan; Yang, Kuang Hsuan; Hsu, Ting C.

In: Journal of Physical Chemistry C, Vol. 113, No. 19, 14.05.2009, p. 8162-8168.

Research output: Contribution to journalArticle

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