Nb-doping of TiO2/SrTiO3 nanotubular heterostructures for enhanced photocatalytic water splitting

作者：Yang Yang; Lee Kiyoung; Kado Yuya; Schmuki Patrik^*

来源：Electrochemistry Communications, 2012, 17: 56-59.

DOI：10.1016/j.elecom.2012.01.019

• Nanotubes
• Nb-doping
• TiO2/SrTiO3 heterostructure
• Water splitting
• Hydrothermal

Ti alloys with low Nb contents (0.1 at.% and 0.5 at.%) were used to grow self-organized Nb-doped TiO2 nanotube arrays. These layers were partially converted to SrTiO3 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 TiO2/SrTiO3 heterostructure nanotubes. Photoelectrochemical characterization shows that Nb-doping efficiently enhances the photocatalytic water splitting performance of TiO2/SrTiO3 heterostructure nanotubes.

• 出版日期2012-4