| TiO2/SiO2复合薄膜的形成历程与超亲水性关系 |
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| 引用本文： | 陈喜明,蒋新,鲁波娜.TiO2/SiO2复合薄膜的形成历程与超亲水性关系[J].化学反应工程与工艺,2004,20(4):352-356. |
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| 作者姓名： | 陈喜明 蒋新 鲁波娜 |
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| 作者单位： | 浙江大学,材料与化工学院,杭州,310027;中科院过程工程研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金(20476088);浙江省科技计划项目(2004C31057) |
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| 摘 要： | 考察了溶胶-凝胶法制备TiO2／SiO2复合薄膜过程中，正硅酸乙酯(TEOS)的水解时间与膜的超亲水性的关系，通过XRD分析了SiO2添加量对TiO2锐钛矿晶型的影响，并研究复合薄膜的表面处理对其亲水性的影响。实验发现，当无因次反应时间为0．4时，复合薄膜的亲水性最好；SiO2的引入能够抑制金红石晶型的生长，最佳含量在10～20％。
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| 关 键 词： | 复合薄膜 超亲水性 水解时间 二氧化钛 二氧化硅 |
| 文章编号： | 1001-7631(2004)04-452-05 |
| 修稿时间： | 2003年10月10 |
Study on Relationship between Super-Hydrophilicity of TiO2-SiO2 Composite Thin Films and Formed Process |
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| Chen Ximing Jiang Xin Lu Bona.Study on Relationship between Super-Hydrophilicity of TiO2-SiO2 Composite Thin Films and Formed Process[J].Chemical Reaction Engineering and Technology,2004,20(4):352-356. |
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| Authors: | Chen Ximing Jiang Xin Lu Bona |
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| Abstract: | TiO2-SiO2 nanocomposite films were prepared via sol-gel processing on the soda lime glass substrates. The effects of SiO2 addition and the relationship between the hydrolysis time of TEOS and super-hydrophilicity of the thin films were investigated. XRD analysis found that the addition of SiO2 had a suppressive effect on the transformation of anatase to rutile in calcinations and the optimum mole fraction of SiO2 was 10-20%. It was also found that the optimum hydrolysis time existed when hydrolysis reaction proceeds 40% of the gelation time. An elementary research on the high temperature treatment which can also lead to super-hydrophilicity was also carried out. |
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| Keywords: | composite thin films super-hydrophilicity hydrolysistime titanium dioxide silicon dioxide |
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