Effect of TiO2 nanoparticles on the improved surface-enhanced raman scattering of polypyrrole deposited on roughened gold substrates

Yu Chuan Liu, Ping I. Lin, Yit Tsong Chen, Ming Der Ger, Kuo Lung Lan, Chih Lung Lin

研究成果: 雜誌貢獻文章同行評審

34 引文 斯高帕斯(Scopus)

摘要

We report here the first electrochemical oxidation-reduction cycle procedure to roughen gold substrates in 0.1 N HCl aqueous solution containing 1 mM rutile TiO2 nanoparticles under the irradiation of UV light. It is encouraging to find that the oxidized peak in the anodic scan, which is responsible for the surface-enhanced Raman scattering, increases significantly due to the effect of adding TiO2 under an electric field and UV irradiation. Moreover, the SERS spectrum of polypyrrole electrodeposited on the corresponding roughened gold substrate exhibits a 5-fold higher intensity compared to that without the contribution of TiO2 nanoparticles.

原文英語
頁(從 - 到)14897-14900
頁數4
期刊Journal of Physical Chemistry B
108
發行號39
DOIs
出版狀態已發佈 - 九月 30 2004
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學

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