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Photoelectrochemical properties of Fe-doped TiO2 nanotube arrays fabricated by anodization

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Abstract

Ti–Fe alloys with Fe contents of 0.05, 0.5 and 1.0 wt% were obtained using the arc-melting method. Fe-doped TiO2 nanotube arrays were prepared by anodizing Ti–Fe alloys in ethylene glycol solution containing 0.25 wt% NH4F and 10 wt% H2O. The microstructure, crystal structure and photoelectrochemical properties of the nanotube arrays were characterized using scanning electron microscopy, X-ray diffraction, UV–Vis diffuse reflectance spectroscopy and electrochemical analyzer. Results show that doping of 0.05 wt% Fe improves the photoelectrochemical properties of titania nanotube arrays significantly, whilst further increasing the Fe contents to 0.5 and 1.0 wt% degrades these properties. The external potential has a considerable influence on the photocurrent density at doping content of 0.5 wt% Fe.

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Acknowledgments

This work is supported by National Natural Science Foundation of China (No. 51272064), Key Basic Research Program of Hebei Province of China (No. 12965135D), the Excellent Youth Foundation of Hebei Province Scientific Committee of China (E2013202032) and the Talent Training Project of Hebei Province (2013).

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Authors and Affiliations

  1. School of Material Science and Engineering, Hebei University of Technology, Tianjin, 300130, China

    Xixin Wang, Jianling Zhao, Yingru Kang, Lanlan Li & Xingru Xu

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  1. Xixin Wang
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  2. Jianling Zhao
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  3. Yingru Kang
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  4. Lanlan Li
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Correspondence to Jianling Zhao.

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Wang, X., Zhao, J., Kang, Y. et al. Photoelectrochemical properties of Fe-doped TiO2 nanotube arrays fabricated by anodization. J Appl Electrochem 44, 1–4 (2014). https://doi.org/10.1007/s10800-013-0617-3

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