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  • Title: Nitrogen-doped TiO2 nanotube array films with enhanced photocatalytic activity under various light sources.
    Author: Lai YK, Huang JY, Zhang HF, Subramaniam VP, Tang YX, Gong DG, Sundar L, Sun L, Chen Z, Lin CJ.
    Journal: J Hazard Mater; 2010 Dec 15; 184(1-3):855-863. PubMed ID: 20889257.
    Abstract:
    Highly ordered nitrogen-doped titanium dioxide (N-doped TiO(2)) nanotube array films with enhanced photocatalytic activity were fabricated by electrochemical anodization, followed by a wet immersion and annealing post-treatment. The morphology, structure and composition of the N-doped TiO(2) nanotube array films were investigated by FESEM, XPS, UV-vis and XRD. The effect of annealing temperature on the morphology, structures, photoelectrochemical property and photo-absorption of the N-doped TiO(2) nanotube array films was investigated. Liquid chromatography and mass spectrometry were applied to the analysis of the intermediates coming from the photocatalytic degradation of MO. The experimental results showed that there were four primary intermediates existing in the photocatalytic reaction. Compared with the pure TiO(2) nanotube array film, the N-doped TiO(2) nanotubes exhibited higher photocatalytic activity in degradating methyl orange into non-toxic inorganic products under both UV and simulated sunlight irradiation.
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