| 纳米TiO2-SiO2复合材料的制备及光催化性能 |
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| 引用本文： | 鞠剑峰,李澄俊,徐铭.纳米TiO2-SiO2复合材料的制备及光催化性能[J].精细石油化工进展,2005,6(7):4-7. |
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| 作者姓名： | 鞠剑峰 李澄俊 徐铭 |
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| 作者单位： | 1. 南京理工大学化工学院,南京,210094;南通大学化学化工学院,南通,226007
2. 南京理工大学化工学院,南京,210094 |
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| 基金项目： | 国防科工委“十五”规划“武器装备预先研究公用技术项目”（41305070203）. |
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| 摘 要： | 以钛酸丁酯和硅酸乙酯为主要原料，制备多孔纳米TiO2-SiO2复合材料，采用氮气吸附-脱附，XRD，TEM，FT-IR等测试方法对其进行表征，以甲基橙的光催化降解反应对其光催化活性进行评价。结果表明，TiO2-SiO2具有核-壳结构，为锐钛矿和金红石相的混合物，比表面达到118．62m^2／g，TiO2以粒径为12．4nm的晶粒形式被SiO2包覆，复合材料粒径约为18nm；复合材料在22min时对甲基橙降解率达100％，而纯TiO2在22min时，对甲基橙降解率仅为40％，说明复合材料光催化活性比纯TiO2有明显提高。
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| 关 键 词： | 纳米TiO2-SiO2复合材料 制备方法 光催化性能 光催化活性 比表面 红外光谱 |
| 收稿时间： | 2005-05-18 |
| 修稿时间： | 2005年5月18日 |
Preparation of Nanometer TiO2- SiO2 Composite Material and Its Photo- catalytic Activity |
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| Ju Jianfeng,LI Chengjun,Xu Ming.Preparation of Nanometer TiO2- SiO2 Composite Material and Its Photo- catalytic Activity[J].Advances in Fine Petrochemicals,2005,6(7):4-7. |
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| Authors: | Ju Jianfeng LI Chengjun Xu Ming |
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| Abstract: | Porous nanometer TiO_2-SiO_2 composite material was prepared from Ti(OC_4H_9)_4 and Si(C_2H_5)_4 as ma- jor raw material using sol-gel technique and characterized by adsorption/desorption of N_2,XRD,TEM and FT- IR.Its photo-catalytic activity for the decomposition of methyl orange was also evaluated.The test results indicat- ed that the TiO_2-SiO_2 was of nucleus-shell structure comprising the mixture of anatase and rutile phase with the specific surface area of 118.62m~2/g.TiO_2 particles of 12.4 nm in diameter were coated with porous SiO_2 film and the size of composite material was about 18 nm.The methyl orange could be decomposed at 100% and 40% when using composite material and pure TiO_2 as catalyst respectively in 22 min showing that photo-catalytic activity of the composite material was higher than pure TiO_2. |
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| Keywords: | TiO2 SiO2 nanometer composite material nucleus - shell structure photo - catalytic activity |
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