Numerical investigation of surface plasmon resonance effects on photocatalytic activities using silver nanobeads photodeposited onto a titanium dioxide layer

Yuan Fong Chau, Chih Chan Hu, Ci Yao Jheng, Yao Tsung Tsai, Li Zen Hsieh, Wayne Yang, Chien Ying Chiang, Yuh Sien Sun, Cheng Min Lee

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We numerically investigated the surface plasmon resonance effects on photocatalytic activities using silver nanobeads photodeposited onto a titanium dioxide (TiO2) layer by three-dimensional finite element method. Results show that the proposed case C structure exhibits significantly high photocatalytic activity in a wide range of incident angle of light and broad wavelength range in near-UV, visible and near-infrared. The enhanced electric field region, intensity and peak resonance wavelength could be increased by enhancing the inner medium dielectric constant (ε) in silver nanobeads with ε in the range 1.7689-11.56 and the incident angle of light θ in the range 30°-75°.

Original languageEnglish
Pages (from-to)223-228
Number of pages6
JournalOptics Communications
Volume331
DOIs
StatePublished - 15 Nov 2014

Keywords

  • Finite element method
  • Peak resonance wavelength
  • Plasmonic photocatalytic reactor

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