【摘要】 以钛酸四丁酯和SnCl2·2H2O为前驱体,采用溶胶凝胶(SolGel)法制备了TiO2SnO2复合纳米粒子,利用XRD、IR和XPS等测试技术对其结构、粒子粒径、晶型等进行了表征。以有机挥发物正庚烷为模拟污染物,测定了TiO2SnO2复合微粒的气相光催化性能。实验结果表明,用SolGel法制备的TiO2SnO2复合微粒光催化活性优于纯TiO2;随焙烧温度的增加,其粒子粒径由100nm长大到342nm,晶型也在500～600℃下由锐钛矿向金红石型转变,同时光催化活性逐渐降低。另外,当n(Sn)/n(Ti)=006时,光催化活性最高。更多还原

【Abstract】 TiO 2 SnO 2 nanoparticles were prepared by sol gel method. XRD, IR and XPS were used to characterize the nanoparticles. The photocatalytic oxidation of heptane was used as model reaction to measure the photocatalytic activity of the TiO 2 SnO 2 nanoparticles. The particle size of TiO 2 SnO 2 increases from 10 0 nm to 34 2 nm as the calcination temperature increases and the structure changes from anatase to rutile at 500～600 ℃. At the same time, the photocatalytic activity in heptane degradation is decreased. The particles with n (Sn)/ n (Ti)=0 06, afford the best photocatalytic activity.更多还原