PEC electrode of ZnO nanorods sensitized by CdS with different size and its photoelectric properties

Zhifeng Liu*, Yun Wang, Bo Wang, Yabin Li, Zhichao Liu*, Jianhua Han, Keying Guo, Yajun Li, Ting Cui, Li Han, Cuiping Liu, Gangmin Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

The gradient PEC electrodes of ZnO nanorods sensitized by CdS with different size were fabricated via successive ionic layer adsorption and reaction (SILAR) method and applied in photochemical water splitting. The concentrations of reaction solution and SILAR cycles were investigated in the synthetic process and the working mechanism of the gradient PEC electrode was suggested. The results showed that the hydrogen generation efficiency of 4.88% was achieved for the ZnO/CdS gradient PEC electrode constructed by decreasing of the CdS quantum dots size on ZnO nanorods due to the improved absorption and appropriate energy gap structure, which was confirmed by enhanced absorption spectrum. The expected products have potential application in photoelectrochemical water splitting.

Original languageEnglish
Pages (from-to)10226-10234
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number25
DOIs
StatePublished - 21 Aug 2013
Externally publishedYes

Keywords

  • Absorption
  • CdS
  • Electrode
  • Gradient
  • Water splitting
  • ZnO

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