| 酒石酸协同下TiO2光催化降解水中甲基橙 |
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| 引用本文： | 杜艳艳,戴儒南,吴垚,兰叶青.酒石酸协同下TiO2光催化降解水中甲基橙[J].环境科学学报,2009,29(8):1707-1712. |
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| 作者姓名： | 杜艳艳 戴儒南 吴垚 兰叶青 |
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| 作者单位： | 南京农业大学理学院,南京,210095 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 实验研究了酒石酸协同下TiO2光催化降解水中甲基橙的作用机理及其影响因素.结果表明,紫外光照射下,酒石酸对TiO2降解甲基橙有显著的协同作用,其降解速率常数为单独TiO2作用时的10倍,是单独酒石酸作用时的180倍;溶液pH越低,甲基橙的降解速率越快;酒石酸初始浓度对甲基橙光催化降解速率也有明显的影响,酒石酸浓度越高,甲基橙的光催化降解速率越快,但当酒石酸浓度大于1 mmol·L-1,甲基橙的降解速率增加缓慢,达2 mmol·L-1后反应速率基本不再增加.
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| 关 键 词： | 酒石酸 甲基橙 光催化降解 |
| 收稿时间： | 2008/10/24 0:00:00 |
| 修稿时间： | 2/25/2009 9:58:44 PM |
Photocatalytic degradation of methyl orange by TiO2 combined with tartaric acid |
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| DU Yanyan,DAI Runan,WU Yao and LAN Yeqing.Photocatalytic degradation of methyl orange by TiO2 combined with tartaric acid[J].Acta Scientiae Circumstantiae,2009,29(8):1707-1712. |
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| Authors: | DU Yanyan DAI Runan WU Yao and LAN Yeqing |
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| Institution: | DU Yanyan,DAI Runan,WU Yao,LAN Yeqing College of Science,Nanjing Agricultural University,Nanjing 210095 |
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| Abstract: | The mechanism and influence of photocatalytic degradation of methyl orange by tartaric acid and TiO2 were studied in aqueous solution. The results demonstrate that the degradation of methyl orange can be markedly accelerated by tartaric acid and TiO2 together under ultraviolet light irradiation. The rate constant is 10 times and 180 times,respectively,greater than those by TiO2 and tartaric acid alone. Lower pH results in much higher photocatalytic degradation of methyl orange. In addition,the degradation r... |
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| Keywords: | TiO2 |
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