热液法低温制备锐钛矿型二氧化钛纳米粉体  

Low-temperature Preparation of Anatase TiO2 Powders by Hydrothermal Method

作　　者：张炜[1] 王书亮[1] 张锦彬[1] 马云庆[1] 王翠萍[1] 刘兴军[1] 

机构地区：[1]厦门大学材料科学与工程系,福建厦门361005

出　　处：《纳米科技》2007年第5期49-52,共4页

摘　　要：以钛酸四丁酯为前驱体,采用热液法在低于100℃的条件下制备了纳米晶TiO2粉体。运用DSC、XRD和HRTEM对所获得的TiO2粉体进行表征。XRD结果表明：所得到的TiO2粉体都是锐钛矿相,颗粒大小随着热液处理温度（60～100℃）的升高而增大,由Scherrer公式计算,其粒径介于4.8～6.9nm。同时,研究了所获TiO2粉体在紫外光下降解亚甲基蓝的性质。Nanocrystalline TiO2 in the anatase phase has been obtained by hydrothermal method with tetrabutyl titanate below 100℃. The synthesized powders were characterized by differential scanning calorimetry （DSC）, X-ray diffraction （XRD）, and high resolution transmission electron microscope （HRTEM）. XRD results show that the synthesized powders are all anatase. The grain size of the powders increases with the increment of the hydrothermal temperature from 60 degrees to 100 degrees, calculated grain size is from 4.8 to 6.9 nm by Scherrer method. The samples were investigated for the photodegradation properties of methylene blue （MB） solutions exposed to UV light illumination.

关 键 词：TIO2 光催化 亚甲基蓝 低温 热液法 

分 类 号：TB34[一般工业技术—材料科学与工程]