纳米复合材料H_6P_2W_(18)O_(62)/TiO_2(PS)紫外光催化降解甲基橙

UV photocatalytic activity of nano-composite H_6P_2W_(18)O_(62)/TiO_2(PS) for methyl orang

采用聚苯乙烯(PS)微球为模板剂,经溶胶-凝胶方法制备了复合材料H6P2W18O62/TiO2(PS)。经傅立叶-红外光谱(FT-IR)、紫外-可见漫反射(UV-Vis/DRS)以及扫描电子显微镜配合X-射线能量色散谱仪(SEM-EDS)等测试手段对上述合成材料的组成、结构及形貌进行了表征。结果显示,经PS微球处理后H6P2W18O62/TiO2(PS)中母体多酸的基本结构未发生明显变化,且该合成产物H6P2W18O62/TiO2(PS)呈单分散和密堆积圆球状结构。在紫外光催化降解甲基橙的实验研究中,纳米复合材料H6P2W18O62/TiO2(PS)表现出较好的光催化性能,其活性明显高于其它体系。

Nano-composite H6P2W18O6/TiO2 （ PS ） was prepared by sol-gel method using polystyrene （ PS ） latex sphere as template. The phase compositions, structures and morphologies of H6P2W18O62/TiO2 （PS） were well-characterized by FT-IR, UV-Vis/DRS and SEM-EDS. The results showed that the basic structure of polyoxometahes in the nano-composite HsP2W18O62/TiO2 （ PS ） has been basicly matained. Moreover, the composites which were used with PS had monodisperse and close packing of spherical structure. In addition, the results for photocatalytic degradation of methyl orang under UV light irradiaton show that the activity of nano-composite H6P2W18O62/TiO2 （ PS ） is better than that of other Dhotocatalvsts.