ZnO/TiO2 纳米管复合材料的制备及其光催化性能

本文成功地制备了ZnO/TiO2纳米管复合光催化材料,并通过XRD,TEM和UV-Vis等测试手段对该复合光催化剂进行了表征.研究了该复合光催化材料在紫外光和太阳光下,对亚甲基兰的降解作用.结果表明,由于适量ZnO的复合,具有管状结构和较高比表面积的ZnO/TiO2纳米管复合光催化材料相对于纯的TiO2纳米管具有了更强的紫外光吸收性能和红移现象.使得该复合光催化剂在紫外光下对亚甲基兰具有更快和更完全的降解性能.ZnO/TiO2纳米管(10 wt%ZnO)复合光催化材料在太阳光照射下,对亚甲基兰也有较高的降解能力.而且,该催化剂也可被循环使用,这使得该复合光催化剂具有了广阔的应用前景.

Synthesis and Photocatalysis of the ZnO/TiO2 Nanotubes Composite Material

In this article,the ZnO/TiO2 nanotubes composite materials were successfully synthesized and characterized by the XRD,TEM and UV-Vis technologies.The photocatalytic activity of the composite materials with tubular structure and higher specific area has been tested on the decomposable substrate methylene blue under UV-light and sunlight illumination.The results in the degradation of methylene blue showed that due to the addition of proper amount of ZnO,the composite photocatalysts own much stronger absorption of ultraviolet and red shift,which made the composite photocatalysts own much better photocatalytic activity in contrast with the pure TiO2nanotubes.And it is more important that the ZnO/TiO2nanotubes(10 wt% ZnO) composite photocatalyst also showed good photocatalysis of methylene blue in the sunlight and could be reused,which is essential to the potentially practical application.