喷涂法构筑二氧化硅纳米粒子涂层及其光学和润湿性质

doi:10.7517/j.issn.1674-0475.2012.04.260

影像科学与光化学 ›› 2012, Vol. 30 ›› Issue (4): 260-268.DOI: 10.7517/j.issn.1674-0475.2012.04.260

喷涂法构筑二氧化硅纳米粒子涂层及其光学和润湿性质

高亮娟^1,2, 何溥¹, 李晓禹^1,2, 贺军辉¹

1. 中国科学院理化技术研究所功能纳米材料实验室,北京 100190;
2. 中国科学院研究生院, 北京 100049

收稿日期:2012-01-09 修回日期:2012-02-17 出版日期:2012-07-15 发布日期:2012-07-15
通讯作者: 贺军辉

Construction of Nanostructured Silica Surfaces by Spray-Coating and Their Optical and Wetting Properties

GAO Liang-juan^1,2, HE Pu¹, LI Xiao-yu^1,2, HE Jun-hui¹

1. Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China;
2. Graduate University of Chinese Academy of Sciences,Beijing 100049, P.R.China

Received:2012-01-09 Revised:2012-02-17 Online:2012-07-15 Published:2012-07-15

摘要/Abstract

摘要： 采用Stöber方法,通过调节反应温度及乙醇和水的体积,合成了不同粒径的二氧化硅纳米粒子.以合成的粒径为20 nm的二氧化硅纳米粒子为原料,采用简单、方便的喷涂方法在玻璃片上构筑了纳米粒子涂层.在550 ℃煅烧二氧化硅纳米粒子涂层,增强了二氧化硅纳米粒子在玻璃片上的附着力.用1H, 1H, 2H, 2H-全氟辛基三乙氧基硅烷修饰之后,二氧化硅纳米粒子涂层的表面润湿性由亲水性转变为疏水性.通过喷涂法制备的二氧化硅纳米粒子涂层具有减反增透效果,当二氧化硅纳米粒子质量分数为0.48%、循环喷涂沉积数为3时,涂层在可见光范围内的最大透光率可达95.5%.用扫描电子显微镜观测涂层表面形貌发现,喷涂法制备的涂层是均匀的、可控的.喷涂技术构筑纳米粒子涂层具有简单快速、可大面积应用等优点.

关键词: 接触角, 二氧化硅纳米粒子, 喷涂, 亲水性, 疏水性, 透光率, 1H, 1H, 2H, 2H-全氟辛基三乙氧基硅烷

Abstract: Silica nanoparticles with different sizes were fabricated via the Stöber method by adjusting the reaction temperature and the volumes of ethanol and water. Simple and convenient spraying-coating method was used to construct coatings on slide glasses with synthesized silica nanoparticles of 20 nm in size. Adhesion of silica nanoparticles to slide glasses was enhanced by calcination of the silica nanoparticle coatings at 550 ℃. After surface modification with 1H, 1H, 2H, 2H-perflurooctyltriethoxysilane, the wetting properties of these coatings changed from hydrophilicity to hydrophobicity. The silica nanoparticle coatings constructed by spray-coating are anti-reflective. When the mass percentage of silica nanoparticles was 0.48% and the number of spray-coating cycles was 3, the transmittance of coating reached as high as 95.5% in the visible range. It was found by scanning electron microscopy observations that the coatings obtained by spray-coating are uniform and controllable. The spray-coating approach to the construction of nanoparticle coatings are a simple and fast fabrication process, and is suitable for large area applications.

Key words: contact angle, silica nanoparticle, spray-coating, hydrophilicity, hydrophobicity, transmittance, 1H, 1H, 2H, 2H-perflurooctyltriethoxysilane

中图分类号:

高亮娟, 何溥, 李晓禹, 贺军辉. 喷涂法构筑二氧化硅纳米粒子涂层及其光学和润湿性质[J]. 影像科学与光化学, 2012, 30(4): 260-268.

GAO Liang-juan, HE Pu, LI Xiao-yu, HE Jun-hui. Construction of Nanostructured Silica Surfaces by Spray-Coating and Their Optical and Wetting Properties[J]. Imaging Science and Photochemistry, 2012, 30(4): 260-268.

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喷涂法构筑二氧化硅纳米粒子涂层及其光学和润湿性质

Construction of Nanostructured Silica Surfaces by Spray-Coating and Their Optical and Wetting Properties

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