Three-dimensional plasmonic photoanodes based on Au-embedded TiO 2 structures for enhanced visible-light water splitting

Zhaoyao Zhan, Jianing An, Huanchao Zhang, Reinack Varghese Hansen, Lianxi Zheng

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Plasmon-assisted visible light photocatalysis presents a possible solution for direct solar-to-fuel production. Here we investigate the plasmon-enhanced photocatalytic water splitting using different TiO2/Au electrode structures. Experimental data demonstrates that the Au embedded in TiO 2 (Au-in-TiO2) electrode greatly outperforms the Au sitting on TiO2 (Au-on-TiO2) electrode. Numerical simulation shows that the local electric field is very intense in the semiconductor near Au nanoparticles, which causes the enhancement of electron-hole pair generation. A 3D Au-embedded TiO2 structure is thus proposed to further improve the light absorption and photocatalytic performance.

Original languageBritish English
Pages (from-to)1139-1144
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number2
DOIs
StatePublished - 22 Jan 2014

Keywords

  • absorption
  • local electric field
  • photocatalytic
  • plasmonic
  • water splitting

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