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Citation: MENG Dan, WANG Heyi, LIU Xiuhua, DING Lanlan. Effects of Fe-Doping on the Structures and Photocatalytic Activities of TiO₂ Thin Films[J]. Chinese Journal of Applied Chemistry, ;2011, 28(12): 1379-1386. doi: 10.3724/SP.J.1095.2011.00022 shu

Effects of Fe-Doping on the Structures and Photocatalytic Activities of TiO₂ Thin Films

1.
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900

Corresponding author: WANG Heyi,
Received Date: 12 January 2011
Available Online: 22 April 2011
Fund Project: 中国工程物理研究院科学技术发展基金(2009B030127)资助项目 (2009B030127)

The Fe-doped TiO₂ films were prepared by sol-gel method and characterized by X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),confocal microscope Raman spectrometer(Raman),UV-Vis absorption spectroscopy(UV-Vis) and atomic force microscopy(AFM).The photocatalytic activities of the films were evaluated by using the degradation of the methyl orange.The results showed that TiO₂ in Fe/TiO₂ films took an anatase structure when calcinated between 300℃ and 600℃.Increasing the calcination temperature up to 700℃,TiO₂ transformed to rutile phase.The roughness and the grain size of Fe/TiO₂ films grew gradually with the increases of the doping amount of Fe content and the calcination temperature.The photon excited wavelength of the Fe/TiO₂ films moved to the visible light gradually with the increase of number of coating layer.Low levels of Fe-doping improved the photocatalytic activities of the TiO₂ thin films,while higher doping decreased the photocatalytic activities of TiO₂ thin films.The optimal Fe-doping was found to be 0.1% for the maximum degradation of methyl orange.
- Fe-doped TiO₂ thin films,
- photocatalytic degradation,
- reaction mechanism,
- methyl orange
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effects of Fe-Doping on the Structures and Photocatalytic Activities of TiO₂ Thin Films