Photoelectrochemical Performance of Nb-doped TiO2 Nanoparticles Fabricated by Hydrothermal Treatment of Titanate Nanotubes in Niobium Oxalate Aqueous Solution

doi:10.1016/j.jmst.2014.03.010

Abstract

Abstract: Nb-doped TiO₂ nanoparticles were prepared by hydrothermal treatment of titanate nanotubes in niobium oxalate aqueous solution. The effect of Nb doping and rutile content on the photoelectrochemical performance based on TiO₂ powder electrodes was investigated. The results show that Nb-doped TiO₂ with a small amount of rutile exhibits the enhanced photoelectric conversion efficiency for dye-sensitized solar cell. The highest photoelectric conversion efficiency of 8.53% is obtained for 1% Nb-TiO₂ containing a small amount of rutile. When a small amount of rutile contained in 2% Nb-TiO₂, a higher photoelectric conversion efficiency of 8.77% is achieved.

Key words: Titanate nanotube, Hydrothermal, Nb-doped, TiO, Dye-sensitized solar cell

Lizhen Long, Liangpeng Wu, Xu Yang, Xinjun Li. Photoelectrochemical Performance of Nb-doped TiO₂ Nanoparticles Fabricated by Hydrothermal Treatment of Titanate Nanotubes in Niobium Oxalate Aqueous Solution[J]. J. Mater. Sci. Technol., 2014, 30(8): 765-769.

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Photoelectrochemical Performance of Nb-doped TiO₂ Nanoparticles Fabricated by Hydrothermal Treatment of Titanate Nanotubes in Niobium Oxalate Aqueous Solution

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