| 有机物存在下Cr6+离子的光催化还原 |
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| 引用本文： | 傅宏祥,吕功煊,李树本.有机物存在下Cr6+离子的光催化还原[J].物理化学学报,1997,13(2):106-112. |
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| 作者姓名： | 傅宏祥 吕功煊 李树本 |
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| 作者单位： | State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Science,Lanzhou 730000 |
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| 摘 要： | 选择多种有机物，对Ｃｒ＾６＋离子与有机物共存污染体系的光催化氧化还原协同作用研究，得出了光催化应用于消除有毒金属离子与有机污染物共存实际体系的有关信息，在酸性条件下，ＴｉＯ２对Ｃｒ＾６＋离子污染具有显著的光催化还原消除效果，还原气氛对反应影响不大，Ｃｒ＾６＋离子的光催化还原符合Ｌ－Ｈ动力学规律，不同有机物存在表明，醇，酸及某些芳香有机物对Ｃｒ＾６＋的光催化还原具有明显的促进作用，而一些烷烃及氯代烷
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| 关 键 词： | 铬离子 光催化 协同作用 |
| 收稿时间： | 1996-03-19 |
| 修稿时间： | 1996-11-05 |
Photocatalytic Reduction of Cr~(6 ) ion in the Presence of Organics |
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| Fu Hongxiang ,Lu Gongxuan ,Li Shuben.Photocatalytic Reduction of Cr~(6 ) ion in the Presence of Organics[J].Acta Physico-Chimica Sinica,1997,13(2):106-112. |
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| Authors: | Fu Hongxiang Lu Gongxuan Li Shuben |
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| Affiliation: | State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Science,Lanzhou 730000 |
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| Abstract: | Photocatalytic reduction detoxification of Cr6 ion in TiO2 dispersion, photocatalytic redox synergism in the presence of Cr6 and some different organics have been studied. The implication for the application of photocatalytic redox decontamination in the real pollution system of co-existed toxic metal ions and organics are presented. The results indicate that Cr6 can be reduced and detoxified remarkably with TiO2 as catalyst. The reaction atmosphere has negligible ef fect on Cr6 reduction. Cr6 reduction is in accord with L-H kinetic equation. Some alcohols,acids and aromatic organics exhibit promotion effects on Cr6 reduction, but some alkanes and chloro substituted organics exhibit inhibition eff ects. These different effects are mainly dependent on their structure but not number of the carbon atoms, this means that electronic and structural characteristics of different organics are important fartors in synergism. |
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| Keywords: | Cr~(6 ) ion Photocatalysis Synergism |
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