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Using non-surfacatant organic compounds triethanolamine as the template, TiO2 and Fe3+/V5+-TiO2 mesoporous materials were synthesized by sol-gel and hydrothermal method. The properties of the samples were investigated by XRD, TEM, BET and UV-Vis DRS. The XRD patterns and TEM images confirm that pure TiO2 have the wormhole-like mesoporous structure, which could be preserved by ethanol. extraction and destroyed by calcination of template at 450 degrees C. However, Fe3+/V5+-TiO2 removed template by calcination has the mesoporous structure, which suggests that the mesoporous structure can be steadied by the doped ion. The appropriate molar fraction of the doped ion is 0.5%. BET studies show that the N-2 adsorption-desorption isotherm plots of Fe3+/V5+-TiO2 exhibit type IV isotherms, and specific surface areas about 103.59 and 90.80 m(2)/g, respectively. The average pore diameter of Fe3+/V5+-TiO2 is about 10.5 and 9.6 ran, respectively. Based on the UV-Vis DRS, the gap adsorption edge in visible light region is revealed for the mesoporous Fe3+/V5+-TiO2, rather than in ultraviolet region of the commercial photocatalyst P25. It is also illuminated that the Fe or V ions are incorporated into the lattice positions of the TiO2 during the preparation.
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