Abstract:

In order to expand the optical response of titania into the visible light region，carbon-doped titania powders were prepared by the hydrolysis method and other steps. The prepared samples were then characterized with XRD，XPS and UV-Vis diffuse reflectance spectroscopy. Moreover，the photocatalytic activities of the samples in the visible light region were tested，and the influences of different carbon resource on the photocatalytic activity were investigated. The doping of carbon led to an increase in optical absorption intensity in the visible light region，which result in high visible light photocatalytic activity with carbon doped titania in the decoloration of methyl orange.

摘要：

为拓展二氧化钛对可见光的响应，采用水解法和其它步骤制备了碳掺杂二氧化钛粉末。用X射线衍射和紫外-可见光漫反射吸收光谱以及X射线光电子能谱对制备的样品进行了表征，对可见光照射下的光催化活性进行了测试，并考察了光催化的重复性。结果表明：碳掺杂致使二氧化钛在可见光区的光吸收增强，在降解甲基橙的实验中表现出良好的可见光催化活性。