水热法合成TiO_2纳米花及其性能

Hydrothermal synthesis of TiO_2 nanoflower and its properties

为了解决一维和二维纳米材料在降解有机污染物时,易发生团聚,催化活性低和难以回收等问题,以钛酸四丁酯和醋酸为原料,采用水热法了合成三维TiO_2纳米花。制备地样品TiO_2纳米花通过X射线衍射(XRD),透射电子显微镜(TEM),紫外-可见光(UV)分析,表明TiO_2纳米花被合成。在可见光的照射下,相比较P25(TiO_2粉末),所合成的TiO_2纳米花具有较强的光催化性能。

To slove the problem of agglomeraction, low catalytic and difficulty to recycle and utilize of the one-dimension,two-dimension nanomaterials during the process of degradating organic pollutants, three-dimension TiO_2 nanoflowers were prepared by hydrothermal synthesis method under tetrabutyl titanate and acetic acid as raw materials. The samples were characterized by X-ray diffraction, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy, and the results indicate TiO_2{101} nanoflower has been synthesized. The as-prepared TiO_2{101} hybrid composites showed better photocatalytic activity under visible-light irradiation than P25(TiO_2 powder).