液相沉积法制备掺银TiO_2薄膜及光催化性能  

Synthesis,characterization and photocatalytic activity of Ag-doped TiO_2 films prepared by liquid phase deposition

作　　者：李宣东[1] 韩喜江[1] 孙浩杰[1] 刘新荣[1] 王文英[1] 

机构地区：[1]哈尔滨工业大学理学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2009年第2期101-104,共4页Journal of Harbin Institute of Technology

基　　金：黑龙江省自然科学基金资助项目(B200503)

摘　　要：为了提高TiO2薄膜光催化剂的活性,通过在氟钛酸铵、硼酸混合溶液中加入硝酸银,应用液相沉积法(LPD)制备了掺银TiO2薄膜.采用XRD、SEM、XPS、UV-vis等手段对其组成、表面形貌和结构进行了测试表征;并以甲基橙为模型物,进行降解实验评价Ag-TiO2薄膜的光催化性能.实验结果表明:硼酸/氟钛酸铵摩尔比为2～4,热处理温度为400℃,硝酸银掺杂量为0.03 mol/L时,Ag-TiO2薄膜具有良好的锐钛矿相晶型,同时具有较高的光催化性能.In order to improve the photocatalytic activity of TiO2 thin films, Ag - doped TiO2 films were synthesized by liquid phase deposition method and characterized by X - ray diffraction （XRD）, scanning electron microscopy （ SEM）, X - ray photoelectron spectroscopy （XPS） and UV - vis spectroscopy. Methyl orange was used as the reactant to evaluate the photocatalytic activity of catalyst samples. The experimental results indicate that the photocatalytic activity of Ag - doped TiO2 films which show anatase is higher than that of TiO2 films when the molar ratio of H3BO3/（ NH4 ）2 ZiF6 is 2 -4, the silver nitrate concentration is 0. 03 mol/L and the heating temperature is 400℃.

关 键 词：光催化剂 掺银 TIO2薄膜 液相沉积法 

分 类 号：O614.41[理学—无机化学] O614.122[理学—化学]