水中微量1-庚烯的负载型TiO_2光催化降解及其影响因素  

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] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237

出　　处：《上海环境科学》2003年第3期200-202,共3页Shanghai Environmental Sciences

基　　金：国家自然科学基金资助项目;编号2987707。

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.

关 键 词：1-庚烯 负载型TIO2 光催化 影响因素 油污染 地下水 

分 类 号：X523[环境科学与工程—环境工程]