Abstract
Nitrogen-doped TiO 2 nanotubes with enhanced photocatalytic activity were synthesized using titanate nanotubes as raw material by a facile wet chemistry method. The resulting nanotubes were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, and UV–vis absorption spectroscopy, etc. The photocatalytic activity of nitrogen-doped TiO 2 nanotubes was evaluated by the decomposition of methylene blue under artificial solar light. And it was found that nitrogen-doped TiO 2 nanotubes exhibited much higher photocatalytic activity than undoped titanate nanotubes.
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