| 混晶结构纳米TiO2薄膜制备及其光催化降解甲醛 |
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| 引用本文： | 孙召梅,张剑平,施利毅,贾桂玲,谢晓峰,饶薇薇,朱永法.混晶结构纳米TiO2薄膜制备及其光催化降解甲醛[J].上海大学学报(自然科学版),2005,11(5):518-521. |
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| 作者姓名： | 孙召梅 张剑平 施利毅 贾桂玲 谢晓峰 饶薇薇 朱永法 |
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| 作者单位： | [1]上海大学理学院,上海200444 [2]上海大学环境与化学工程学院,上海200072 [3]上海大学纳米科学与技术研究中心,上海200444 [4]清华大学化学系,北京100084 |
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| 基金项目： | 上海市科委光科技专项基金资助项目（036105032） |
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| 摘 要： | 以Ti（OBu）。为前驱体，采用溶胶凝胶法在不锈钢丝网表面上制备TiO2光催化薄膜，并用扫描电镜（SEM）、X射线衍射（XRD）和热重一差热分析（TG-DTA）法对其进行表征．结果表明，所得TiO2光催化薄膜为锐钛金红石混晶结构，平均粒径为20～30nm．室温下利用甲醛为模拟污染物，考察了该薄膜的光催化活性．实验表明：混晶TiO2光催化薄膜对甲醛有较好的去除效果，甲醛光催化降解反应符合一级反应速率方程．
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| 关 键 词： | 溶胶-凝胶法 TiO2薄膜 纳米 光催化 |
| 文章编号： | 1007-2861（2005）05-0518-04 |
| 收稿时间： | 2004-07-28 |
| 修稿时间： | 2004年7月28日 |
Preparation of Mixing Nanocrystal TiO2 Films and Its Photodegradation of Formaldehyde |
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| SUN Zhao-mei, ZHANG Jian-ping, SHI Li-yi, JIA Gui-ling, XIE Xiao-feng, RAO Wei-wei , ZHU Yong-fa.Preparation of Mixing Nanocrystal TiO2 Films and Its Photodegradation of Formaldehyde[J].Journal of Shanghai University(Natural Science),2005,11(5):518-521. |
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| Authors: | SUN Zhao-mei ZHANG Jian-ping SHI Li-yi JIA Gui-ling XIE Xiao-feng RAO Wei-wei ZHU Yong-fa |
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| Abstract: | Photocatalytic titanium dioxide films coated on stainless steel webnet were prepared by sol-gel route. SEM, XRD and TG-DTA were employed to characterize the samples. Photocatalytic activity of TiO2-based fihns for formaldehyde degradation reaction was also evaluated at room temperature. The results indicate that the film is meso-porous thin film consistiug of anatase and rutile mixing titanium dioxide nanocrystal with grain sizes of about 20 - 30 nm. The photocatalytic degradation rate of formaldehyde follows first order kinetics. |
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| Keywords: | sol-gel route titanium dioxide films nanometer photocatalysis |
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