J4

• • 上一篇    

NO2对光催化降解庚烯的作用

颜为军， 徐自力， 谢超， 杨秋景， 李文艳， 黎娜， 刘星娟， 杜尧国   

  1. （吉林大学 环境与资源学院， 长春 130012）
  • 收稿日期:2005-05-25 修回日期:1900-01-01 出版日期:2006-03-26 发布日期:2006-03-26
  • 通讯作者: 徐自力

The Effects of NO2 for the Photocatalytic Degradation of Heptene

YAN Wei-jun, XU Zi-li, XIE Chao, YANG Qiu-jing, LI Wen-yan, LI Na, LIU Xing-juan, DU Yao-guo   

  1. (College of Environment and Resources, Jilin University, Changchun 130012, China)
  • Received:2005-05-25 Revised:1900-01-01 Online:2006-03-26 Published:2006-03-26
  • Contact: XU Zi-li

PDF (PC)

335

赞

摘要： 以TiO2/SiO2为光催化剂， 在紫外光作用下， 讨论了NO2存在时， 庚烯在TiO2/SiO2上的吸附和光催化降解作用. 通过GC-MS和FT-IR， 分别测定了3种不同体系的反应产物， 从而推测出可能的反应机理. 实验结果表明， TiO2/SiO2对庚烯的最大吸附量Mmax=3.10　 mg， 当存在NO2（44.64 μmol/L）时Mmax=3.80　mg. 在光催化降解庚烯的反应中， 当NO2加入量较大(NO2≥89.28 μmol/L)时， 庚烯降解反应速率加快， 但矿化度比无 NO2时的小.

关键词: 光催化, NO2, 庚烯, 吸附, 降解

Abstract: The adsorption and photocatalytic degradation of heptene on TiO2/SiO2 photocatalyst under the irradiation of UV light were investigated carefully in the presence of NO2. By means of GC-MS and FT-IR， we respectively determined the intermediate products of the three different reaction systems, and accordingly deduced the possible reaction mechanisms. The experiment data indicate that Mmax (the maximum adsorption amount of TiO2/SiO2 for heptene) is 3.10 mg, and is increased to 3.80 mg in the presence of NO2（44.64 μmol/L）. In the photocatalytic degradation of heptene, addition of a large amount of NO2 (NO2≥89.28 μmol/L) can accelerate the photodegradation reaction rate of heptene, but its mineralization degree with the addition of NO2 is lower than that without the addition of NO2.

Key words: photocatalysis, NO2, heptene, adsorption, degradation

中图分类号: 

  • X505
版权所有 © 《吉林大学学报(理学版)》编辑部
地址：吉林省长春市前进大街2699号　邮编：130012　电话：+86-431-88499428　E-mail: sejuj@jlu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发