Nb-doping of TiO 2/SrTiO 3 nanotubular heterostructures for enhanced photocatalytic water splitting

Yang Yang, Kiyoung Lee, Yuya Kado, Patrik Schmuki

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Ti alloys with low Nb contents (0.1 at.% and 0.5 at.%) were used to grow self-organized Nb-doped TiO 2 nanotube arrays. These layers were partially converted to SrTiO 3 using a hydrothermal treatment. Various factors, such as hydrothermal temperature, hydrothermal duration, and annealing conditions, were investigated in view of the photocatalytic water splitting performance of the formed Nb-doped TiO 2/SrTiO 3 heterostructure nanotubes. Photoelectrochemical characterization shows that Nb-doping efficiently enhances the photocatalytic water splitting performance of TiO 2/SrTiO 3 heterostructure nanotubes.

Original languageEnglish
Pages (from-to)56-59
Number of pages4
JournalElectrochemistry Communications
Volume17
Issue number1
DOIs
StatePublished - Apr 2012
Externally publishedYes

Bibliographical note

Funding Information:
This work was financially supported by the DFG and the DFG-EAM Cluster of Excellence . We would like to thank the Alexander von Humboldt Foundation of Germany for the financial support for Dr. Y. Yang.

Keywords

  • Hydrothermal
  • Nanotubes
  • Nb-doping
  • TiO /SrTiO heterostructure
  • Water splitting

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