Preparation and Characterization of TiO₂ Photocatalytic Thin Film and Its Compounds by Micro-Arc Oxidation Technique

Qun Ma, Lili Ji, Yinchang Li, Tingting Jiang, Junxia Wang, Fei Li, Hongyun Jin, Yongqian Wang

Engineering Research Center of Nano-Geo Materials of Education China University of Geosciences, Wuhan, China.
Jiangcheng College of China University of Geosciences, Wuhan, China.

DOI: 10.4236/ampc.2013.38044                

Abstract

Mesoporous TiO₂ ceramic films have been prepared upon the Ti alloy substrate by the micro-arc oxidation (MAO) technology. To enhance the photo-catalytic property of the films, Eu₂O₃ particles were added into the electrolyte solution of Na₂CO₃/Na₂SiO₃. Scanning electron microscope (SEM), energy dispersive (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) are employed to characterize the modified films. Diffuse reflectance spectra (DRS) test, photo-generated current test and photo decomposition test are applied to evaluate the photo-catalytic property of the modified films. The results show that Eu₂O₃ transformed into one-dimensional (1-D) nano-wires embedded within the composite film, and the film has high photo-catalytic property.

 

Keywords

TiO₂; Eu₂O₃; Compound; Photo-Catalytic Property

Conflicts of Interest

The authors declare no conflicts of interest.

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