| 水中微量1-庚烯的负载型TiO_2光催化降解及其影响因素 |
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| 引用本文： | 李继洲,胥峥,林逢凯.水中微量1-庚烯的负载型TiO_2光催化降解及其影响因素[J].上海环境科学,2003(3). |
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| 作者姓名： | 李继洲 胥峥 林逢凯 |
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| 作者单位： | 华东理工大学资源与环境工程学院 上海200237
(李继洲，胥峥)，华东理工大学资源与环境工程学院 上海200237(林逢凯) |
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| 基金项目： | 国家自然科学基金资助项目，编号2987707。 |
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| 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。
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| 关 键 词： | 1-庚烯 负载型TiO2 光催化 影响因素 |
Photo-catalytic Degratation and its Affected Factors of Trace l-heptene in Water by Immobilized TiO_2 |
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| Li JizhouXu Zheng Lin Fengkai.Photo-catalytic Degratation and its Affected Factors of Trace l-heptene in Water by Immobilized TiO_2[J].Shanghai Environmental Science,2003(3). |
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| Authors: | Li JizhouXu Zheng Lin Fengkai |
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| Abstract: | 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. |
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| Keywords: | l-hepteneImmobilized TiO2Photo-catalysisAffected factor |
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