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| 玻璃表面二氧化钛涂层的光催化与亲水性关系 | |
| 引用本文： | 李海洋,张尼尼,罗仲宽,蔡弘华,杜湘琴,陈耀存,王明良.玻璃表面二氧化钛涂层的光催化与亲水性关系[J].稀有金属材料与工程,2008,37(Z2):55-58. |
| 作者姓名： | 李海洋 张尼尼 罗仲宽 蔡弘华 杜湘琴 陈耀存 王明良 |
| 作者单位： | 1. 深圳大学化学与化工学院,广东,深圳,518060 2. 东华大学材料科学与工程学院,上海,201620 3. 深圳龙华自来水有限公司,广东,深圳,518000 |
| 摘 要： | 将二氧化硅溶胶与自制的二氧化钛溶胶按照一定的质量比混合,搅拌均匀后喷涂到洁净的玻璃表面上,在500℃下热处理30 min得到了透明二氧化钛涂层.采用XRD和AFM分析了二氧化钛涂层的晶相结构和表面形貌,将涂层暴露在太阳光或者紫外灯下研究它们的光催化与亲水性关系.研究结果表明添加质量分数为20%～30%的SiO2到TiO2溶胶中制备的二氧化钛涂层能有效地降低玻璃表面水滴的接触角,同时,SiO2添加质量分数为20%～30%时显示优良的光催化性能.由分析结果可知,二氧化钛涂层的光催化性能与亲水性呈现相关性,它们共同作用产生自清洁效果. |
| 关 键 词： | 二氧化钛涂层 光催化 亲水性 自清洁 |
| 文章编号： | 1002-185X(2008)S2-055-04 |
| 修稿时间： | 2007年11月19 |
Relationship between Photo-Catalysis and Hydrophilicity of Titania Coating on Glass |
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| Li Haiyang,Zhang Nini,Luo Zhongkuan,Cai Honghua,Du Xiangqin,Chen Yaocun,Wang Mingliang.Relationship between Photo-Catalysis and Hydrophilicity of Titania Coating on Glass[J].Rare Metal Materials and Engineering,2008,37(Z2):55-58. | |
| Authors: | Li Haiyang Zhang Nini Luo Zhongkuan Cai Honghua Du Xiangqin Chen Yaocun Wang Mingliang |
| Abstract: | Titania (TiO2)sol was prepared using TiOSO4.Silica sol was added to TiO2 sol with a certain ratio.TiO2 transparent coatings on glass were obtained by spray-coating technique and heat-treated at 500℃for 30 min.The crystal structure and surface morphology of the coating were investigated by XRD and AFM.Their hydrophilic and photo-catalytic behavior ender exposure to sunlight or ultraviolet illumination were then studied.It is found that the addition of 20～30 wt% SiO2 to TiO2 is effective for reducing the contact angle of water.The optimum photo-catalytic character can be acquired by adding 10～30 wt%SiO2 to the TiO2 coating.According to the results,photo-catalytic activity is closely related to hydrophilicity,the two factors act together and thus increase the self-cleaning effect. |
| Keywords: | titania photo-catalysis hydrophilicity self-cleaning |
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