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›› 2011, Vol. 11 ›› Issue (3): 514-518.

• 材料工程专栏 • 上一篇    下一篇

Ce掺杂TiO2催化剂的光催化性能

张浩 钱付平   

  1. 安徽工业大学建筑工程学院 安徽工业大学建筑工程学院
  • 收稿日期:2011-02-18 修回日期:2011-04-11 出版日期:2011-06-20 发布日期:2011-06-20
  • 通讯作者: 张浩

Photocatalytic Property of TiO2 Catalyst Doped with Cerium

ZHANG Hao QIAN Fu-ping   

  1. School of Civil Engineering and Architecture, Anhui University of Technology School of Civil Engineering and Architecture, Anhui University of Technology
  • Received:2011-02-18 Revised:2011-04-11 Online:2011-06-20 Published:2011-06-20
  • Contact: ZHANG Hao

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被引次数

54

摘要： 以钛酸丁酯[Ti(C4H9O)4]为钛源、硝酸铈[Ce(NO3)3×6H2O]为改性剂，采用溶胶-凝胶法合成了掺Ce的TiO2催化剂，最佳掺Ce量为1.5%(mol)，煅烧温度为500℃. 采用X射线衍射、差热、紫外-可见光谱对其结构进行了表征. 结果表明，500℃时煅烧的掺Ce 1.5%的TiO2催化剂晶粒平均粒径为 17.3 nm，其光谱吸收边带发生了红移，吸收强度增大. Ce-TiO2光催化剂用量为10 g/L, 80 W日光灯照射240 min，对2 mg/mL甲醛溶液的光催化降解率达38.75%.

关键词: Ce-TiO2, 光催化, 甲醛, 铈, 掺杂

Abstract: Titanium dioxide sol was synthesized by sol-gel method with adulteration of Ce(NO3)3×6H2O. The samples were characterized by XRD, DTA and UV-Vis. The results show that the average diameter of Ce-TiO2 particles is 17.3 nm when the Ce-doped 1.5%(mol), is calcined at 500℃. From the UV-Vis spectra the absorption edge of Ce-doped titania has a red shift and the absorption intensities are increased. The degradation rate of formaldehyde reaches 38.75% when the dosage of photocatalyst is optimally 10 g/L and 240 min illumination is provided with an 80 W fluorescent lamp.

Key words: Ce-TiO2, photocatalysis, formaldehyde, cerium, doping

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