高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (9): 1475.

• 论文 • 上一篇    下一篇

灭多威的光催化降解动力学研究

张曼平1, 战闰1, 夏宗凤1, GaryLow2   

  1. 1. 青岛海洋大学化学化工学院, 青岛, 266003;
    2. 澳大利亚联邦科学与工业研究组织煤炭与能源技术研究所, PMB7, Bangor, NSW2234, 澳大利亚
  • 收稿日期:1997-08-13 出版日期:1998-09-24 发布日期:1998-09-24
  • 通讯作者: 张曼平,男,52岁,博士,教授.
  • 作者简介:张曼平,男,52岁,博士,教授.
  • 基金资助:

    国家自然科学基金(批准号:49476287)资助课题.

A Kinetic Study on the Photocatalytic Degradation of Methomyl

ZHANG Man-Ping1, ZHAN Run1, XIA Zong-Feng1, Gary Low2   

  1. 1. College of Chemistry and Chemical Engineering, Ocean University of Qingdao, Qingdao, 266003;
    2. CSIRO Division of Coal and Energy Technology, PMB 7, Bangor, NSW 2234, Australia
  • Received:1997-08-13 Online:1998-09-24 Published:1998-09-24

摘要: 研究了农药灭多威在TiO2光催化下的降解产物、反应动力学及影响降解速率的因素.灭多威在TiO2催化下10min内可被完全转换为无机物而失去毒害作用.IR研究表明,灭多威的分解产物为NH4+、SO42-和CO2,其分解过程为准一级反应.除铜和氯离子在低浓度时有促进作用,而高浓度为阻碍作用外,大部分阴、阳离子对降解均有不利影响.

关键词: 灭多威, 光催化降解, 动力学

Abstract: The photocatalytic degradation of a wisely used pesticidemethomyl was studied in this paper. The degradation was catalyzed by titanium dioxide. The products, kinetics and factors that affect the rate of degradation was discussed. Methymol can be photooxided into inorganic materials in 10 minutes under the catalysis of titanium dioxide. FTIRstudy shows that the products are NH4+, SO42- and CO2. The degradation is first order reaction and the kinetic reaction curve was modeled. Some cations and anions can affect the reaction rate. Most ions retard the rate but Cu2+ and Cl- at low concentrations stimulate the reaction.

Key words: Methymol, Photocatalytic degradation, Kinetic study

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