SiO2-TiO2 自清洁防反光薄膜的制备与表征

doi:10.3724/SP.J.1077.2011.00375

无机材料学报 ›› 2011, Vol. 26 ›› Issue (4): 375-380.DOI: 10.3724/SP.J.1077.2011.00375

SiO₂-TiO₂ 自清洁防反光薄膜的制备与表征

蒋波 ¹,² , 段学臣 ¹,² , 周志超 ¹ , 程亚娟 ¹,² , 刘国聪 ¹,³ , 刘杨林 ¹

1. 中南大学材料科学与工程学院 , 长沙 410083; 2. 中南大学有色金属材料科学与工程教育部重点实验室 , 长沙 410083; 3. 玉林师范学院化学与生物科学系 , 玉林 537000

收稿日期:2010-06-22 修回日期:2010-08-30 出版日期:2011-04-20 网络出版日期:2011-04-22
作者简介:蒋波 (1987 - ), 男 , 硕士研究生 .
基金资助:
湖南省科技计划项目 (2009FJ3097); 长沙市科技计划项目 (K0902131-11); 湖南省自然科学基金重点项目 (08JJ3104); 广西高校优秀人才资助项目 (G2009033)

Synthesis and Characterization of Self-cleaning and Anti-reflective SiO₂-TiO₂ Nanometric Films

JIANG Bo ¹,²,DUAN Xue-Chen ¹,²,ZHOU Zhi-Chao¹,CHENG Ya-Juan ¹,²,LIU Guo-Cong ¹, ³,LIU Yang-Lin¹

1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. The Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education of China, Changsha 410083, China; 3. Deparment of Chemistry and Biology, Yulin Normal University, Yulin 537000, China

Received:2010-06-22 Revised:2010-08-30 Published:2011-04-20 Online:2011-04-22
Supported by:
Science and Technology Foundation of Hunan Province (2009FJ3097); Science and Technology Foundation of Changsha City (K0902131-11); Natural Science Key Foundation of Hunan Province (08JJ3104); College Talents Foundation of Guangxi Province (G2009033)

摘要/Abstract

摘要： 采用溶胶-凝胶浸渍-提拉法,通过改变镀膜顺序和镀膜速率制备了TiO₂/SiO₂(ST)和SiO₂/TiO₂(TS)型的一系列SiO₂改性TiO₂双层薄膜. 薄膜的形貌、光透性、光催化活性、亲水性等分别用场发射扫描电镜(FESEM) 、分光光度计、光降解甲基橙等表征方法进行了分析. 结果表明: SiO₂膜层因其低反射指数,在ST型、TS型薄膜中均能起到防反光作用; 对于TS型薄膜, 其光催化活性与亲水性均随表层SiO₂薄膜提拉速率的增加而降低, 但ST型薄膜则相反, 当表层TiO₂膜提拉速率为6mm/min时, 所得薄膜表现出最佳的光催化活性和亲水性,进而具备最佳的自清洁性能.

关键词: 溶胶-凝胶, SiO₂-TiO₂薄膜, 自清洁, 防反光

Abstract: A series of bi-layer TiO₂/SiO₂(ST) and SiO₂/TiO₂(TS) films were fabricated respectively by changing the coating sequences and rates, via a Sol-Gel dip-coating method. The morphology, light transmittance, photocatalytic activitiy and hydrophilicity of t he obtained products were characterized by FESEM, spectrophotometer, photo-degradation of methyl orange (MO), etc. The experimental results show that SiO₂ layer can enhance the light transmittances of ST and TS films due to its lower refractive index. As to the self-cleaning function, the photocatalytic activity and hydrophilicity of TS bi-layer film are both weakened while increasing the dip-coating speed of the overlayer SiO₂ film, owing to that more TiO₂ is covered by SiO₂. However, it is the opposite for ST bi-layer film. When the dip-coating speed of the overlayer TiO₂film reaches 6mm/min, the obtained film exhibits the best photocatalytic activity and hydrophilicity even without UV illumination, which favors greatly the self-cleaning function of the films.

Key words: Sol-Gel, SiO₂-TiO₂ film, self-cleaning, anti-reflection

中图分类号:

TB333
TB34

蒋波, 段学臣, 周志超, 程亚娟, 刘国聪, 刘杨林. SiO₂-TiO₂ 自清洁防反光薄膜的制备与表征[J]. 无机材料学报, 2011, 26(4): 375-380.

JIANG Bo,DUAN Xue-Chen,ZHOU Zhi-Chao,CHENG Ya-Juan,LIU Guo-Cong,LIU Yang-Lin. Synthesis and Characterization of Self-cleaning and Anti-reflective SiO₂-TiO₂ Nanometric Films[J]. Journal of Inorganic Materials, 2011, 26(4): 375-380.

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SiO₂-TiO₂ 自清洁防反光薄膜的制备与表征

Synthesis and Characterization of Self-cleaning and Anti-reflective SiO₂-TiO₂ Nanometric Films

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