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

Yu Chuan Liu; Kuang Hsuan Yang; Ting Chu Hsu

doi:10.1021/jp810503z

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

Yu Chuan Liu, Kuang Hsuan Yang, Ting Chu Hsu

Research output: Contribution to journal › Article › peer-review

30 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 language	English
Pages (from-to)	8162-8168
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	19
DOIs	https://doi.org/10.1021/jp810503z
Publication status	Published - May 14 2009
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Surfaces, Coatings and Films
Physical and Theoretical Chemistry

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10.1021/jp810503z

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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.",

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AU - Liu, Yu Chuan

AU - Yang, Kuang Hsuan

AU - Hsu, Ting Chu

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AB - 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.

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

Abstract

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