| 四环素光催化降解特性与选择性研究 |
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| 引用本文： | 宋晨怡,尹大强.四环素光催化降解特性与选择性研究[J].环境科学,2014,35(2):619-625. |
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| 作者姓名： | 宋晨怡 尹大强 |
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| 作者单位： | 同济大学长江水环境教育部重点实验室, 上海 200092;同济大学环境科学与工程学院, 上海 200092;同济大学长江水环境教育部重点实验室, 上海 200092;同济大学环境科学与工程学院, 上海 200092 |
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| 基金项目： | 国家自然科学基金项目（51278353）；国家科技支撑计划项目（2012BAJ25B07） |
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| 摘 要： | 研究了盐酸四环素的光催化降解行为,结果表明四环素光催化降解反应符合一级反应动力学方程,吸附过程为整个光催化降解的控制步骤,推断四环素的主要降解途径是吸附在二氧化钛(TiO2)表面发生光催化氧化反应.同时,通过对四环素与磺胺甲唑或阿莫西林混合样品的降解实验表明,改变pH、TiO2投加量等因素,两种抗生素的降解表现出了明显的选择性.
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| 关 键 词： | 四环素 光催化降解 选择性 二氧化钛 吸附 |
| 收稿时间： | 2013/5/29 0:00:00 |
| 修稿时间： | 9/4/2013 12:00:00 AM |
Characteristics and Selectivity of Photocatalytic-Degradation of Tetracycline Hydrochloride |
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| SONG Chen-yi and YIN Da-qiang.Characteristics and Selectivity of Photocatalytic-Degradation of Tetracycline Hydrochloride[J].Chinese Journal of Environmental Science,2014,35(2):619-625. |
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| Authors: | SONG Chen-yi and YIN Da-qiang |
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| Affiliation: | Key laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China;College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;Key laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China;College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The photocatalytic-degradation behavior of tetracycline hydrochloride (TTC) was studied. The catalyst used was photosensitive semiconductor titanium dioxide (TiO2). The results showed that the photocatalytic degradation of TTC was well fitted to first order reaction kinetics model, and the adsorption was the control step of the whole photocatalytic-degradation process, indicating that the main degradation path was the photocatalytic reaction of TTC adsorbed on the surface of TiO2. Besides, through photocatalytic-degradation of the mixed solution of TTC and sulfamethoxazole or amoxicillin, the degradation of the two antibiotics showed obvious selectivity when the pH, TiO2 dosage and other conditions were changed. |
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| Keywords: | tetracycline hydrochloride (TTC) photocatalytic degradation selectivity titanium dioxide (TiO2) adsorption |
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