个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:功能材料化学与化工
办公地点:化工综合楼A306
联系方式:lqwang@dlut.edu.cn Lqwang218cn@163.com
电子邮箱:Lqwang@dlut.edu.cn
Preparation and photocatalytic properties of strontium titanate powders via sol-gel process
点击次数:
论文类型:期刊论文
发表时间:2009-01-15
发表刊物:4th Asian Conference on Crystal Growth and Crystal Technology
收录刊物:SCIE、EI、CPCI-S、Scopus
卷号:311
期号:3
页面范围:746-748
ISSN号:0022-0248
关键字:Sol-gel method; Nitric monoxide elimination; SrTiO(3); Photocatalysis
摘要:On the basis of our previous work, we developed a new type of catalyst (e.g. photocatalysts) to degradate nitrogen oxides (NO(x)) Recently, a series of photocatalysts Such as strontium titanate (SrTiO(3)) were prepared by sol-gel method, their photocatalytic activities of NO degradation were also studied. The obtained samples were characterized by differential thermal analysis and thermal gravimetric analysis, X-ray diffraction and transmission electron microscopy. The as-prepared photocatalysts have a perfect perovskite structure, and pure samples can be obtained when the corresponding sol-gel precursors were calcined at 600 degrees C in muffle. With the temperature increasing, the grain size of SrTiO(3) samples grew large steadily and the crystallinity became better. The optimal synthesis of SrTiO(3) was determined to be 700 degrees C calcination. Our current experiments indicated that some parameters such as lamp-house, calcinations temperature had a strong effect on the designed photoreaction, the concentration of nitric oxide at 716 mg/m(3), the degradation rate of nitric oxide can increase above 92%. (C) 2008 Elsevier B.V. All rights reserved.