Ag@AgI/AgBr改性TiO_2纳米管光催化剂的制备及光催化性能研究

Study on the Photocatalytic Activity and Preparation of Ag@Ag I/Ag Br Modified Titania Nanotubes Catalyst

通过原位生长法合成Ag I/Ag Br改性的Ti O2纳米管,并通过光化学反应制备了Ag@Ag I/Ag Br/Ti O2纳米管复合光催化剂;采用X射线粉末衍射、紫外可见光谱和透射电子显微镜等方法表征了样品的结构与形貌,并以甲基橙为模型化合物研究复合材料的光催化性能。结果表明:在500 W的钨灯照射60 min后,复合光催化剂对甲基橙的降解率为68.13%。

Ag@Ag I/Ag Br modified titania nanotubes catalyst（Ag@Ag I/Ag Br/TNTs） were obtained by in-situ growth method and photo reduction method. The resulting samples were characterized by means of X-ray diffraction（XRD）, ultraviolet-visible spectrophotometry（UV-Vis） and transmission electron microscopy（TEM）. The photocatalytic properties of the samples were tested by using methyl orange as a model compound. The experimental results show that after irradiation for 60 min under a 500 W of tungstenic lamp, the degradation rate of methyl orange solution using the photocatalyst can reach 68.13 %.