Preparation and Properties Characterization of N-Doped TiO₂ Film

Abstract:

Nitrogen-doped nanoTiO₂ sol was prepared by sol-gel method. The obtained sol was coated onto glass substrates by spin coating method, followed by drying at low temperature and calcined at high temperature. The films were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and ultraviolet-visible spectra (UV-Vis) . The XRD spectra showed that the crystal type of N-doped TiO₂ films was anatase. The SEM images showed that the surface of films were flat without obvious crack and average diameter was about 20 nm. The UV-Vis spectra showed that the absorbance of N-doped TiO₂ films at ultraviolet region increased. N-doping caused photocatalysis response wavelength to turn longer. The photocatalytic activity of N-doped TiO₂ films was researched through the degradation experiment of methyl orange under ultraviolet light. Higher photocatalytic degradation efficiency was exhibited compared to the pure TiO₂ films.

• Periodical: Materials Science Forum (Volumes 809-810)
• Pages: 573-577
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.809-810.573
• Online since: December 2014
• Authors: Jing Sheng Zuo, Chang Ping Wei*, Chun Jia Peng, Rui Ying He, Guo Dong Wang
• Keywords: N-Doping, Photocatalysis, Sol-Gel Method, TiO₂ Film

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