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

作者：Liu YC^*; Yu CC; Wang CC; Juang LC

来源：Chemical Physics Letters, 2006, 420(1-3): 245-249.

DOI：10.1016/j.cplett.2005.12.085

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.

• 出版日期2006-3-10