New application of photocatalytic TiO2 nanoparticles on the improved surface-enhanced Raman scattering

Yu Chuan Liu, Chung Chin Yu, Cheng Cai Wang, Lain Chuen Juang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We report here the first simultaneous irradiation of UV light on samples in surface-enhanced Raman scattering (SERS) measurements. A roughen gold substrate with TiO2 nanoparticles was prepared by using electrochemical oxidation-reduction cycles (ORC) in 0.1 M HCl aqueous solution containing 1 mM anatase TiO2 nanoparticles. It is encouraging to find that the SERS spectrum, obtaining with the simultaneous irradiation of 4-W UV light on the sample, of polypyrrole (PPy) electrodeposited on the TiO2 nanoparticles-containing roughened gold substrate exhibits an 8-fold higher intensity compared to that without the contribution from the simultaneous irradiation of UV light.

Original languageEnglish
Pages (from-to)245-249
Number of pages5
JournalChemical Physics Letters
Volume420
Issue number1-3
DOIs
Publication statusPublished - Mar 10 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

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