Preparation of Fe-doped TiO2 nanotube arrays and their photocatalytic activities under visible light |
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Authors: | Ya-Fang Tu Jian-Ping Sang Xian-Wu Zou |
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Affiliation: | a Department of Physics, Wuhan University, Wuhan 430072, China b Department of Physics, Jianghan University, Wuhan 430056, China |
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Abstract: | Fe-doped TiO2 nanotube arrays have been prepared by the template-based liquid phase deposition method. Their morphologies, structures and optical properties were investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and UV-vis absorption spectroscopy. Their photocatalytic activities were evaluated by the degradation of methylene blue under visible light. The UV-vis absorption spectra of the Fe-doped TiO2 nanotube arrays showed a red shift and an enhancement of the absorption in the visible region compared to the undoped sample. The Fe-doped TiO2 nanotube arrays exhibited good photocatalytic activities under visible light irradiation, and the optimum dopant amount was found to be 5.9 at% in our experiments. |
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Keywords: | A. Oxides A. Nanostructures B. Chemical synthesis D. Catalytic properties |
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