利用纳米管钛酸(NTA)和氨水的水热反应制得TiO_(2-x)N_x系列催化剂,并进一步通过热分解-机械研磨的方法在TiO_(2-x)N_x表面附着上银颗粒,制得Ag/TiO_(2-x)N_x系列催化剂.采用X射线衍射(XRD)、紫外-可见漫反射(DRS)、X射线光电子能谱(XPS)等技术对催化剂进行了表征和分析.光催化氧化丙烯的实验对比了TiO_(2-x)N_x与Ag/TiO_(2-x)N_x两个系列催化剂的可见光催化活性,考察了氧空位、晶型结构、氮含量和银颗粒对催化剂可见光催化活性的影响.结果表明,催化剂锐钛矿的晶型越好,氧空位含量越高,催化剂的可见光催化活性越好;贵金属银的电子捕获能力使得Ag/TiO_(2-x)N_x的可见光催化活性远高于TiO_(2-x)N_x催化剂. The TiO 2 (2-x) N x catalysts were prepared by the hydrothermal reaction of nanotubular titanic acid (NTA) and ammonia water, and silver particles were attached to the surface of TiO 2 -x N x by thermal decomposition-mechanical milling. The catalysts were characterized by X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance (DRS) and X-ray photoelectron spectroscopy (XPS) The photocatalytic activity of two series of catalysts, TiO 2 -x N x and Ag / TiO 2 -x N x, was compared with the experiment of catalytic oxidation of propylene. The effects of oxygen vacancy, crystal structure, nitrogen content and visible light The results show that the better the crystal form of the anatase is, the higher the oxygen vacancy is and the better the photocatalytic activity of the catalyst is. The electron capture ability of the noble metal silver makes visible light of Ag / TiO 2 -x N x The catalytic activity is much higher than that of TiO_ (2-x) N_x catalyst.