采用水热法,以聚乙二醇(PEG)为模板, N,N-二甲基甲酰胺为氮源,制备了氮掺杂的介孔二氧化钛。并用X射线粉末衍射(XRD)、傅立叶红外光谱(FTIR)、BET、透射电子显微镜(TEM)、紫外一可见漫反射谱(DRS)和 X 射线光电子能谱(XPS)等技术手段对制备样品进行了表征。结果表明：所合成的样品具有锐钛矿结构，直径约20 nm,并且具有一定的可见光活性。以甲基橙(MO)为光降解模型,样品在可见光区表现出了较好的催化活性,这取决于烷氧基和氮掺杂的协同效应。
N-doped mesoporous titania was synthesized using polyethylene glycol (PEG) as template and Dimethyl Formamide (DMF) as nitrogen source.The physical and photophysical properties of the photocatalyst were character-ized by X-ray diffraction (XRD), FTIR, BET, transmission electron microscope (TEM), UV-Vis diffuse reflectance spectra (DRS), and X-ray photoelectron spectra (XPS).PEG played an important role in the preparation process within mesoporous titania. The N-doped mesoporous titania possessed diameter ofca. 20 nm with anatase crystalline struc-ture, and had absorption in the visible region. N-doped mesoporous titania samples showed excellent photocatalytic activity for methyl orange (MO) degradation under visible light irradiation, which could be attributed to synergistic effect between the retained alkoxyls and the nitrogen doping.
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