The Preparation of Nano-TiO₂ Films Doped with ZnO or Fe₂O₃

Abstract:

Prepare TiO₂ doped with ZnO or Fe₂O₃ composite photocatalytic film by using sol-gel method and characterize its microstructure and light absorption performance with X-ray diffraction instrument (XRD), scanning electron microscopy (SEM) and UV-visible spectrophotometer. The results show that: particles of TiO₂ doped with Fe₂O₃ composite photocatalytic film are uniform and well dispersed; the rough surface of the film has a certain gap which is helpful for the adhesion of gas and liquid; the diameter of the particles is about 50 nm. The crystal grain size of TiO₂ film doped with ZnO is bigger, about 100 nm; the gap of the film is less and particles are nearly spherical and protruding, the shape of grain is structured. The absorption spectrum of TiO₂ doped with ZnO or Fe₂O₃ has a red shift and both of their absorption intensity is higher than that of pure TiO₂ film in the scope of the ultraviolet and visible region.

• Periodical: Advanced Materials Research (Volume 700)
• Pages: 15-18
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.700.15
• Online since: May 2013
• Authors: Ai Hong Guo, Wen Bo Su, Chun Na Zhang, Feng Yuan
• Keywords: Fe₂O₃, Film, Photocatalysis, TiO₂, ZNO

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