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以钛酸丁酯为原料,采用低温水解法合成锐钛矿型TiO_2纳米颗粒。采用浸渍法在TiO_2表面复合WO_3,将钨酸铵分解复合在TiO_2表面,制得不同浓度WO_3复合的TiO_2粉体光催化剂WO_3/TiO_2。并采用扫描电镜(SEM)、X射线衍射(XRD)、紫外可见漫反射(UV-Vis DRS)、荧光光谱(FS)等方法对其进行了表征。以WO_3-TiO_2为光催化剂,以高压Hg灯为光源,光降解含亚甲基蓝和甲基橙的废水,实验结果表明:WO_3复合浓度为2%的WO_3-TiO_2光催化剂降解效果较好。
Anatase TiO 2 nanoparticles were synthesized by low temperature hydrolysis using butyl titanate as raw material. WO_3 was compounded on the surface of TiO_2 by impregnation method, and decomposed on the surface of TiO_2 by ammonium tungstate to prepare WO_3 / TiO_2 photocatalyst with different concentrations of WO_3. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-Vis DRS and fluorescence spectroscopy (FS). WO_3-TiO_2 as photocatalyst and high pressure Hg lamp as light source, photodegradation of methylene blue and methyl orange wastewater, the experimental results show that: WO_3 composite concentration of 2% WO_3-TiO_2 photocatalyst degradation better.