Xu Wenguo, Liu Hongqin, Lu Shixiang, Xi Jinming, Wang Yanbin
Institute for Chemical Physics, School of Science, Beijing Institute of Technology, Beijing 100081, P. R. China.
Langmuir. 2008 Oct 7;24(19):10895-900. doi: 10.1021/la800613d. Epub 2008 Sep 6.
Superhydrophobic surfaces were obtained on copper and galvanized iron substrates by means of a simple solution-immersion process: immersing the clean metal substrates into a methanol solution of hydrolyzed 1H,1H,2H,2H-perfluorooctyltrichlorosilane (CF3(CF2)5(CH2) 2SiCl3, FOTMS) for 3-4 days at room temperature and then heated at 130 degrees C in air for 1 h. Both of the resulting surfaces have a high water contact angle (CA) of larger than 150.0 degrees as well as a small sliding angle (SA) of less than 5 degrees . The formation and structure of the superhydrophobic surfaces were characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and energy-dispersive X-ray spectrometry (EDX). SEM images showed that both of the resulting surfaces exhibited special hierarchical structure. The special hierarchical structure along with the low surface energy leads to the high surface superhydrophobicity.
将清洁的金属基材在室温下浸入水解的1H,1H,2H,2H-全氟辛基三氯硅烷（CF3(CF2)5(CH2)2SiCl3，FOTMS）的甲醇溶液中3至4天，然后在空气中130℃加热1小时。所得的两个表面都具有大于150.0度的高水接触角（CA）以及小于5度的小滑动角（SA）。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）和能量色散X射线光谱（EDX）对超疏水表面的形成和结构进行了表征。SEM图像表明，所得的两个表面均呈现出特殊的分级结构。这种特殊的分级结构与低表面能共同导致了高表面超疏水性。
