以偏钛酸为原料在室温离子液体中水热制备二氧化钛光催化剂  

Preparation of TiO_2 Photocatalyst by Hydrothermal Method in Room Temperature Ionic Liquid Using Metatitanic Acid

作　　者：王钦[1] 杨青林[1] 车玉萍[1] 郭林[1] 邓元[1] 嵇天浩[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《稀有金属》2007年第S2期29-32,共4页Chinese Journal of Rare Metals

摘　　要：以偏钛酸作原料,用1-烯丙基,3-甲基咪唑氯([AMIM][Cl])室温离子液体,在温度160℃下水热制备了锐钛矿型的纳米二氧化钛。借助于X射线衍射仪(XRD),透射电子显微镜(TEM),和紫外-可见分光光度计(UV-Vis)等手段分别对所制备光催化剂的晶型、形貌、光学特性和光催化性能进行了表征。结果表明:所制备的二氧化钛光催化剂为锐钛矿型,其平均晶粒大小为18.4 nm,颗粒为类椭球状,在可见光区存在一定的吸收,光催化性能测试表明所制备光催化剂降解亚甲基蓝的能力高于商业品P-25,并且在可见光照射下表现出了一定的光催化活性。Anatase nano-titanium dioxide was prepared by hydrothermal method at the temperature of 160 ℃ in 1-allyl,3-methylimidazolium chloride() room temperature ionic liquid,using metatitanic acid as raw materials.The phase,morphology,optical properties and photocatalytic activity of the samples were analyzed by X-ray diffraction(XRD),transmission electronic microscopy(TEM),and UV-Visible spectrometer(UV-Vis),respectively.The results show that the average diameter of the particles is about 18.4 nm and the morphology is ellipsoidlike.The as-prepared samples show certain absorption in the visible light region and photocatalytic activity under visible light irradiation,and show higher photocatalytic activities than commercial product P-25 for photocatalytic oxidative degradation of the methylene blue through photocatalytic test.

关 键 词：纳米二氧化钛 光催化剂 室温离子液体 水热法 偏钛酸 

分 类 号：O643.36[理学—物理化学]