| TiO2光催化剂的超临界CO2萃取法制备及其降解甲基橙的活性 |
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| 引用本文： | 叶钊,邱挺,潘海波.TiO2光催化剂的超临界CO2萃取法制备及其降解甲基橙的活性[J].环境化学,2003,22(6):578-581. |
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| 作者姓名： | 叶钊 邱挺 潘海波 |
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| 作者单位： | 福州大学化学化工学院,福州,350002 |
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| 基金项目： | 福建省自然科学基金资助项目 (E0 0 1 0 0 1 0 ) |
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| 摘 要： | 用超临界二氧化碳萃取TiO2醇凝胶制备纳米二氧化钛粉体，对萃取工艺条件进行了讨论，并用XRD，FT-IR，BET和DRS对上述粉体进行表征．以光催化降解甲基橙为模型反应，结果表明，与超临界二氧化碳干燥所得的粒子比较，该工艺干燥的TiO2粉体粒径小，比表面积大，光催化活性较高。
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| 关 键 词： | 二氧化钛 光催化剂 超临界萃取 二氧化碳 降解 甲基橙 钛酸正丁酯 |
REPARATION OF TITANIA PHOTOCATLYSTS BY SUPERCRITICAL CARBON DIOXIDE EXTRACTION METHOD AND THE DEGRADATION ACTIVITY IN METHYL ORANGE |
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| YE Zhao,QIU Ting,PAN Hai bo.REPARATION OF TITANIA PHOTOCATLYSTS BY SUPERCRITICAL CARBON DIOXIDE EXTRACTION METHOD AND THE DEGRADATION ACTIVITY IN METHYL ORANGE[J].Environmental Chemistry,2003,22(6):578-581. |
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| Authors: | YE Zhao QIU Ting PAN Hai bo |
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| Abstract: | The nanosized TiO 2 has been prepared by using supercritical carbon dioxide to extract TiO 2 ethanol gel.The operation conditions of extraction were investigated.XRD,BET,FT IR and DRS have been used to characterize the TiO 2 particle.The degradation of methyl orange under photocatalyst was regarded as a model reaction.The results showed that the TiO 2 particle,which was obtained by supercritical carbon dioxide extraction possessed smaller particle diameter and better photocatalysis activity,compared with the TiO 2 particle obtained by supercritical carbon dioxide drying method. |
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| Keywords: | titania photocatlyst supercritical carbon dioxide extraction methyl orange |
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