可见光活性的Ru掺杂TiO_2光催化剂的制备及光解水制氢性能研究  

Studies on the Preparation of Ru Doped TiO_2 and Characterization of Hydrogen Generation from Water under Visible Irradiation

作　　者：彭绍琴[1] 李凤丽[1] 王添辉[1] 李越湘[1] 

机构地区：[1]南昌大学理学院化学系,南昌330047

出　　处：《有色金属（冶炼部分）》2006年第3期42-44,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金：973项目(2003CB214503);江西省教育厅基金项目(赣教技字[2005]37号)

摘　　要：采用溶胶—凝胶法制备了系列Ru掺杂TiO2光催化剂,并利用XRD和UV-Vis漫反射光谱对样品进行了表征。结果表明:Ru掺杂阻止了TiO2纳米粒子由锐钛矿向金红石相的转变,提高了TiO2对可见光的吸收强度。Ru掺杂的最佳浓度为0.014%,在可见光的照射下,Ru(0.014%)/TiO2对光解水制氢有较高的活性。A series of Ru doped TiO2 photocatalysts were prepared by sol-gel method and charactered by means ot X-ray diffraction and UV-Vis diffuse reflectance spectroscopy. It was found that the process of phase transfer of TiO2 from anatase to rutile was inhibited and the absorption intensity of TiO2 in the region of visible light was increased by doping Ru. The optimum doping content of Ru was 0.014 %, the photocatalyst of Ru（0. 014 % ）/ TiO2 had a higher photocatalytic activity to hydrogen generation from water under visible light irradiation.

关 键 词：Ru掺杂 TIO2 光催化 可见光 制氢 

分 类 号：O643[理学—物理化学]