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In this paper, the Fe 3+ doped rutile phase TiO 2 nanotubes arrays (NTAs) were prepared in a low temperature water-assistant crystallization method. It is noteworthy that the Fe 3+ doping hardly hinders either the crystallization of rutile TiO 2 NTAs or the highly-ordered nanotubular morphologies. Moreover, Fe 3+ did not form other compound impurities, which indicated that Fe 3+ substitute Ti 4+ into the lattice of TiO 2 . With the introduction of Fe 3+ , the light absorption range of TiO 2 NTAs extends from the ultraviolet band to the visible light range. Photocatalytic testing results indicate that Fe 3+ doped TiO 2 NTAs can effectively improve the degradation rate of methyl orange aqueous solution in visible light, and the TiO 2 NTAs with 0.2 mol/L Fe 3+ doping exhibits the highest photocatalytic degradation efficiency.

Preparation of Fe3+ Doped High-Ordered TiO2 Nanotubes Arrays with Visible Photocatalytic Activities