TiO2 photocatalytic degradation of dimethyl- and diethyl- methylphosphonate, effects of catalyst and environmental factors

被引：0
|
作者：
K. E. O'Shea
I. Garcia
M. Aguilar
机构：
[1] Florida International University,Department of Chemistry
来源：
Research on Chemical Intermediates | 1997年 / 23卷
关键词：
TiO2; Photocatalysis; Organophosphorus Compound; DMMP; Chemical Warfare Agent;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Dimethyl methylphosphonate (DMMP) and diethyl methylphosphonate (DEMP) are readily mineralized by photoexcited titanium dioxide (TiO2). Intermediate products include low molecular weight organic acids and methylphosphonic acid. Complete mineralization yields phosphate and carbon dioxide. The photoactivities of different types of TiO2 were investigated. The decomposition kinetics of DMMP and effects of DMMP and catalyst concentration, sonication, solar irradiation, oxygen concentration, temperature, and hydrogen peroxide on the rate of decomposition are reported. The degradation rates increase with simultaneous sonication, addition of hydrogen peroxide, and at higher temperatures.
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页码：325 / 339
页数：14
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