| TiO2/活性炭复合体对罗丹明B的光催化降解 |
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| 引用本文： | 李佑稷,李效东,李君文,尹静.TiO2/活性炭复合体对罗丹明B的光催化降解[J].环境化学,2004,23(6):650-654. |
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| 作者姓名： | 李佑稷 李效东 李君文 尹静 |
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| 作者单位： | 吉首大学化学化工学院,吉首,416000;国防科技大学CFC国防科技重点实验室,长沙,410073;军事医学科学院卫生学环境医学研究所,天津,300050;国防科技大学CFC国防科技重点实验室,长沙,410073;军事医学科学院卫生学环境医学研究所,天津,300050 |
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| 基金项目： | 中国军事医学科学院国防预研项目 |
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| 摘 要： | 以紫外灯为光源，通过对可溶性染料罗丹明B的降解反应，考察TiO2／活性炭复合体的光催化活性，探讨了光催化反应中溶液的pH值、光强、反应温度和罗丹明B的起始浓度对催化反应的影响，结果表明，TiO2／活性炭复合体具有很高的光催化活性，对罗丹明B的降解过程遵循Langmuir-Hinshelwood动力学方程，降解速率受pH值、罗丹明B起始浓度和入射光强度的影响很大，反应温度对降解速率影响很小．在研究范围内，pH6和40W的入射光强度有利于光催化降解．
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| 关 键 词： | TiO2 活性炭 罗丹明B 光催化 降解 |
PHOTOCATALYTIC DEGRADATION OF RHODAMINE B ON TITANIUM DIOXIDE-BONDED ACTIVE CARBON COMPOSITES |
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| LI You ji , LI Xiao dong LI Jun wen YIN Jing.PHOTOCATALYTIC DEGRADATION OF RHODAMINE B ON TITANIUM DIOXIDE-BONDED ACTIVE CARBON COMPOSITES[J].Environmental Chemistry,2004,23(6):650-654. |
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| Authors: | LI You ji LI Xiao dong LI Jun wen YIN Jing |
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| Institution: | LI You ji 1,2,3 LI Xiao dong 2 LI Jun wen 2 YIN Jing 3 |
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| Abstract: | UV lamp being lamp house,the photoactivity of the TiO 2 bonded active carbon(TiO 2/AC) was investigated by the degradation of dissoluble Rhodamine B.Moreover,the effects of the pH value,light intensity,temperature in reaction and initial concentration of Rhodamine B in solution on the photocatalytic reaction were discussed.The results indicated that TiO 2/AC shows high photocatalytic activity,the degradation raction of Rhodamine B fits Langmuir Hinshelwood kinetic equation,degradation rate is largely affected by pH value,initial concentration of Rhodamine B and light intensity,slightly for temperature in reaction.In research scope,pH 6 and 40W are good for the degradation reaction of Rhodamine B. |
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| Keywords: | TiO_2 active carbon Rhodamine B photocatalyse degradation |
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