陕西科技大学学报2018，Vol.36Issue(3)：107-112,6.
La-TiO2/SiO2光降解催化剂的制备及性能
Preparation and properties of La-TiO2/SiO2 photodegradation catalyst
摘要
Abstract
The photocatalysts of (xwt% )La-TiO2/SiO2 (x=0 .5~3 .0) were prepared with (Si(OC2H5 )4 ) ,(Ti(OC2H5 )4 and(La2O3 )as precursors via a sol-gel method .The samples were characterized by X-ray diffraction (XRD) ,scanning electron microscopy (SEM ) ,specific surface area analyzer (BET ) ,Fourier transform infrared spectroscopy (FT-IR ) and X-ray photoelectron spectroscopy (XPS) ,respectively .Using rhodamine B (RhB) as model pollu-tant ,the effects of the addition of La on photocatalytic efficiency of TiO2/SiO2 (the molar ra-tio of SiO2 to TiO2 was 1:7) catalyst were investigated under visible light and UV light conditions ,respectively .The results showed that the doping amount of La was 2% ,the pho-tocatalytic efficiency of the La-TiO2/SiO2 was the best .After 150 min visible light and 75 min UV light irradiation ,the degradation rate of Rh B reached 99 .2% and 71 .3% respective-ly .关键词
溶胶-凝胶法/La掺杂TiO2/光催化降解/TiO2-SiO2Key words
sol-gel method/La doped TiO2/photocatalytic degradation/TiO2-SiO2分类
化学化工引用本文复制引用
樊国栋,郑少芳,樊苗苗,李连红..La-TiO2/SiO2光降解催化剂的制备及性能[J].陕西科技大学学报,2018,36(3):107-112,6.基金项目
陕西省科技厅工业科技攻关计划项目(2016GY-142) （2016GY-142）
陕西省教育厅重点实验室科研计划项目(14JS015) （14JS015）
