Hydrothermal synthesis of (Fe,N) co-doped TiO2 powders and their photocatalytic properties under visible light irradiation |
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Authors: | Wen-Xiu Liu Jing Ma Xiao-Guang Qu Wen-Bin Cao |
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Affiliation: | (1) Department of Inorganic Nonmetallic Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China |
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Abstract: | (Fe, N) co-doped titanium dioxide powders have been prepared by a quick, low-temperature hydrothermal method using TiOSO4, CO(NH2)2, Fe(NO3)3, and CN3H5 · HCl as starting materials. The synthesized powders were characterized by XRD, TEM, BET, XPS, and UV–Vis spectroscopy. Experimental results show that the as-synthesized TiO2 powders are present as the anatase phase and that the N and Fe ions have been doped into the TiO2 lattice. The specific surface area of the powders is 167.8 m2/g by the BET method and the mean grain size is about 11 nm, calculated by Scherrer’s formula. UV–Vis absorption spectra show that the edge of the photon absorption has been red-shifted up to 605 nm. The doped titanium dioxide powders had excellent photocatalytic activity during the process of photo-degradation of formaldehyde and some TVOC gases under visible light irradiation. |
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Keywords: | (Fe, N) co-doped TiO2 Visible light Photo-degradation Formaldehyde TVOC |
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