文献类型：期刊文献

中文题名：水中微量1-庚烯的负载型TiO_2光催化降解及其影响因素

英文题名：Photo-catalytic Degratation and its Affected Factors of Trace l-heptene in Water by Immobilized TiO_2

作者：李继洲[1];胥峥[1];林逢凯[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2003

卷号：22

期号：3

起止页码：200

中文期刊名：上海环境科学

外文期刊名：Shanghai Environmental Sciences

收录：北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；CSSCI:【CSSCI2003】；

基金：国家自然科学基金资助项目;编号2987707。

语种：中文

中文关键词：1-庚烯;负载型TiO2;光催化;影响因素;油污染;地下水

外文关键词：l-hepteneImmobilized TiO2Photo-catalysisAffected factor

摘要：对水中微量1-庚烯的负载型TiO2光催化氧化反应的研究表明,在初始浓度为5.26～8.96mg/L时,反应速率常数基本保持不变,表明该反应服从一级反应动力学规律。当溶液pH分别为5.2和8.9时,1-庚烯的光催化氧化反应的速率常数和半衰期与pH=7.0时相近,表明在弱酸和弱碱溶液中,pH对1-庚烯光催化氧化反应的影响不大。溶液中无机阴离子如SO42-的存在,能抑制1-庚烯的光催化氧化反应。
On study of photo-catalytic oxidation of trace l-heptene in water by immobilized TiO2 showed thatthis reaction was in conformity with the first-orderkinetics law because the rate constant remained atconcentration of l-heptene from 5.26 to 8.96mg/L inwater. At pH 5.2 and 8.9, the rate constant and half-life of the reaction were closed to the correspondingvalue at pH 7.0, which indicated that in certain re-gion, pH value had little effect on photo-catalyticoxidation of l-heptene. The presence of inorganic an-ions, such as SO42-, retarded the process of photo-catalysis for l-heptene.