Photoelectrochemical water splitting at titanium dioxide nanotubes coated with tungsten trioxide

Jong Hyeok Park, O. Ok Park, Sungwook Kim

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Abstract

The photocatalytic splitting of water into hydrogen and oxygen using solar light is a potentially clean and renewable source for hydrogen fuel. Titanium oxide nanotubes coated with tungsten oxide were prepared to harvest more solar light for the first time and characterized their water splitting efficiency. The tungsten trioxide coatings significantly enhanced the visible spectrum absorption of the titanium dioxide nanotube array, as well as their solar-spectrum induced photocurrents. For the sample, upon white light illumination at 150 mW cm2, hydrogen gas generated at the overall conversion efficiency of 0.87%.

Original languageEnglish
Article number163106
JournalApplied Physics Letters
Volume89
Issue number16
DOIs
Publication statusPublished - 2006 Oct 25

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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