Research Article

Improved performances on surface-enhanced Raman scattering based on electrochemically roughened gold substrates modified with SiO2 nanoparticles

  1. Yu-Chuan Liu1,4,*,
  2. Chung-Chin Yu2,4,
  3. Ting-Chu Hsu3,4

Article first published online: 10 AUG 2009

DOI: 10.1002/jrs.2319

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 40, Issue 11, pages 1682–1686, November 2009

Additional Information

How to Cite

Liu, Y.-C., Yu, C.-C. and Hsu, T.-C. (2009), Improved performances on surface-enhanced Raman scattering based on electrochemically roughened gold substrates modified with SiO2 nanoparticles. J. Raman Spectrosc., 40: 1682–1686. doi: 10.1002/jrs.2319

Author Information

  1. 1

    Department of Chemical and Materials Engineering, Vanung University, Chung-Li City, Taiwan, Republic of China

  2. 2

    Department of Environmental Engineering, Vanung University, Chung-Li City, Taiwan, Republic of China

  3. 3

    General Education Center. Vanung University, Chung-Li City, Taiwan, Republic of China

  4. 4

    Nano Materials Applications R&D Center, Vanung University, 1, Van Nung Road, Shuei-Wei Li, Chung-Li City, Taiwan, Republic of China

*Department of Chemical and Materials Engineering, Vanung University, 1, Van Nung Road, Shuei-Wei Li, Chung-Li City, Taiwan, Republic of China.

Publication History

  1. Issue published online: 11 NOV 2009
  2. Article first published online: 10 AUG 2009
  3. Manuscript Accepted: 22 MAR 2009
  4. Manuscript Received: 12 JAN 2009

Funded by

  • National Science Council of the Republic of China
  • Vanung University

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Keywords:

  • surface-enhanced Raman scattering;
  • SiO2 nanoparticles;
  • electrochemical methods

Abstract

In this work, we use electrochemical oxidation–reduction cycles (ORC) methods to prepare surface-enhanced Raman scattering (SERS)-active gold substrates modified with SiO2 nanoparticles to improve the corresponding SERS performances. Based on the modified substrates, the SERS of Rhodamine 6G (R6G) exhibits a higher intensity by 3-fold of magnitude, as compared with that of R6G adsorbed on a SERS-active Au substrate without the modification of SiO2 nanoparticles. Moreover, the SERS enhancement capabilities of the modified and the unmodified Au substrates are seriously destroyed at temperatures higher than 250 and 200 °C, respectively. These results indicate that the modification of SiO2 nanoparticles can improve the thermal stability of SERS-active substrates. The aging in SERS intensity is also depressed on this modified Au substrate due to the contribution of SiO2 nanoparticles to SERS effects. Copyright © 2009 John Wiley & Sons, Ltd.

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