反应釜填充料系数对纳米TiO_2纤维形貌影响研究

Research on influence of filling coefficient on the morphology TiO_2 nanofibers

采用水热法制备纳米二氧化钛(TiO_2)纤维,利用扫描电镜和X射线衍射仪对制得的纳米TiO_2纤维进行表征,并以甲基橙的脱色降解为模式反应,考察样品的光催化性能。结果表明:在其他条件相同的情况下,反应釜填充料系数不同,所制备的TiO_2纤维形貌也不相同,不同形貌的TiO_2催化性能也有差异,其中TiO_2纤维的催化效果最优,光照120min后对甲基橙的降解率为94%。

The nano TiO_2 nanofibers were prepared using hydrothermal method.The samples were analyzed by SEM and XRD.Taking methylene orange degradation as a model reaction,the photocatalytic property of material was investigated.The results indicated that changing the filling coefficient of reaction kettle,the different morphologies of TiO_2 nanofibers can be obtained.The photocatalysis efficiency of TiO_2 nanofibers were best.And the photocatalysis efficiency on the methylene orange within 120 min was up to 94%.