期刊
THIN SOLID FILMS
卷 570, 期 -, 页码 27-32出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2014.08.045
关键词
Hybrid films; Self-assembly; Wettability; Layer-by-layer
类别
资金
- Natural Science Foundation of China [21203074]
- Natural Science Foundation of Shandong Province [ZR2012BQ007]
The construction of superhydrophobic surfaces is of great interest in the fields of materials science and engineering. In this work, a class of hybrid thin films with controlled wetting property was prepared from silica nanoparticles and an ionic liquid via layer-by-layer self-assembly. Positively charged ionic liquid 1-dodecyl-3-methylimidazoliumbromide ([C(12)mim]Br) and negatively charged silica nanoparticles were alternatively adsorbed onto glass substrates. The silica nanoparticles were characterized by transmission electron microscopy, and the hybrid films were characterized by scanning electron microscope and X-ray photoelectron spectroscopy. The wetting property of the bulk films was examined by water contact angle measurements. The hydrophobicity of surfaces originated from the formation of nanostructure and the hydrophobic property of the ionic liquid. The change in the layer numbers, concentration of NH3 center dot H2O and the type of silica precursor (tetramethoxysilane and tetraethoxysilane) could control the wettability. Under the optimum layer numbers and size of SiO2, a superhydrophobic (SiO2/[C(12)mim]Br)(13) hybrid film with a contact angle of 152.3 +/- 5.0 degrees was obtained. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据