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TiO_2/SiO_2复合薄膜的形成历程与超亲水性关系 被引量:4

Study on Relationship between Super-Hydrophilicity of TiO_2-SiO_2 Composite Thin Films and Formed Process
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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%。 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.
出处 《化学反应工程与工艺》 CAS CSCD 北大核心 2004年第4期352-356,共5页 Chemical Reaction Engineering and Technology
基金 国家自然科学基金(20476088)浙江省科技计划项目(2004C31057)
关键词 TIO2/SIO2 复合薄膜 膜过程 晶型 超亲水性 反应时间 正硅酸乙酯 TEOS 锐钛矿 溶胶-凝胶法 composite thin films super-hydrophilicity hydrolysistime titanium dioxide silicon dioxide
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参考文献7

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