高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (4): 610.

• 研究论文 • 上一篇    下一篇

纳米SnO2@TiO2包覆催化剂的制备及表征

颜秀茹, 李晓红, 宋宽秀, 赵海涛, 陈秀增   

  1. 天津大学理学院化学系, 天津 300072
  • 收稿日期:2000-04-04 出版日期:2001-04-24 发布日期:2001-04-24
  • 通讯作者: 颜秀茹(1945年出生),女,教授,从事无机固体化学研究.E-mail:guoweiwei@eyou.com E-mail:guoweiwei@eyou.com
  • 基金资助:

    天津市自然科学基金(批准号:973606711)资助

Preparation and Characterization of Nanometer Photocatalysis SnO2@TiO2

YAN Xiu-Ru, LI Xiao-Hong, SONG Kuan-Xiu, ZHAO Hai-Tao, CHEN Xiu-Zeng   

  1. Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, China
  • Received:2000-04-04 Online:2001-04-24 Published:2001-04-24

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摘要： 采用活性层包覆法在自制超细SnO2胶体粒子表面包覆TiO2,制备出SnO2@TiO2包覆型复合催化剂,以其对有机磷农药DDVP的降解效果作为评价光催化活性的标准,对制备条件进行了优化,并用XRD、TEM和BET等手段对样品进行了表征.结果表明,SnO2胶体乙醇溶液含水量20%,钛酸丁酯质量分数为34.5%,灼烧温度680℃时制得TiO2含量56.45%的包覆样品SnO2@TiO2为纳米级粒子,且其光催化活性最佳.

关键词: 纳米粒子, 活性层包覆法, 包覆型光催化剂, SnO2@TiO2

Abstract: SnO2@TiO2 coated particles have been prepared with Ti(OC4H9)4 by hydrolysis cross link TiO2 on active SnO2 hydrated particle. Its morphology and structure were characterized by XRD, TEM, and BETmethod. In order to improve the photocatalytic degradation activity of SnO2@TiO2 for dichlorvos, the conditions of preparing were selected and the better photocatalytic activity were received. The result indicated that: SnO2@TiO2 was composited with ranatase TiO2 and rutile SnO2. When mass fraction of TiO2 in SnO2@TiO2 is 56.45%, water content in SnO2 alcohol solution is 20%, volume fraction of Ti(OC4H9)4 in alcohol solution is 34.5%, and ignition temperature of SnO2@TiO2 is 680 ℃, the best photocatalytic activity of SnO2@TiO2 were received. The other factors of effect of SnO2@TiO2 photocatalytic activity were given.

Key words: Nanometer, Active particle layer coated method, Coated photocatalyst, SnO2@TiO2

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