Photocatalytic Activities of Visible-Light-Driven TiO₂ Films Codoped with Aluminum and Nitrogen

Abstract:

The titania films codoped by aluminum and nitrogen have been prepared by cathodic vacuum arc with titanium aluminum alloy target in an O2/N2 gas mixture. The films were characterized by X-ray diffraction (XRD), X-rayphotoelectron spectra (XPS) and ultraviolet-visible spectra (UV–vis). The results showed that all films annealled were crystalline anatase structure with a (101) preferential orientation, XPS revealed that Al and N were successfully doped into the lattice of TiO2. The optical properties of the films revealed that the spectrum response of the Al, N-codoped TiO2 films extended from the UV region to the visible region. The absorption of the Al, N-codoped TiO2 film in the visible region(>400 nm) was enhanced, compared with the pure TiO2 film and N-doped TiO2 film. The Al, N-codoped TiO2 film showed the best photocatalytic activities for the oxidative destruction of Acid Fuchsin (AF) under visible light irradiation.

• Periodical: Advanced Materials Research (Volumes 150-151)
• Pages: 1607-1612
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.150-151.1607
• Online since: October 2010
• Authors: Xiao Ling Cheng, She Jun Hu, Yong Jun Hu, Lin Yu, Zhi Gang Wei
• Keywords: Co-Doping, Film, Photocatalytic Activity, Titania, Visible Light

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