Fabrication of superhydrophobic spherical-like α-FeOOH films on the wood surface by a hydrothermal method
Fabrication of superhydrophobic spherical-like α-FeOOH films on the wood surface by a hydrothermal method
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DOI：
10.1016/j.colsurfa.2012.03.051
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发表时间：
2012-06-05
影响因子：
5.2
通讯作者：
Li, Jian
中科院分区：
文献类型：
--
作者：
Wang, Shuliang;Wang, Chengyu;Li, Jian
以硫酸铁和尿素为原料，通过水热反应制备了木材表面的超疏水球形α - feooh薄膜，并进行了十八烷基三氯硅烷（OTS）单层自组装。采用扫描电镜（SEM）、x射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）和能量分散x射线分析（EDX）对产物的微观结构、化学状态和成分进行了观察。通过静态水接触角（CAs）和滑动水接触角（SA）的测量来描述处理后样品的疏水性。本文还研究了超疏水样品在环境条件下的稳定性和对腐蚀性液体的耐久性。分析表征表明，具有微纳结构的球形α - feooh薄膜均匀沉积在木材表面，OTS分子与α - feooh薄膜结合。制备样品的水接触角高达158度，滑动角约为4度。制备的超疏水性木材表面在常温下保存3个月，或在pH为12的氢氧化钠溶液和pH为2的盐酸溶液中浸泡2小时，仍能保持超疏水性。(C) 2012 Elsevier B.V.版权所有
The superhydrophobic spherical-like alpha-FeOOH films on the wood surface was obtained from ferric sulfate and urea by a hydrothermal reaction process followed by a self-assembly of Octadecyltrichlorosilane (OTS) monolayer. The microstructure, chemical state and composition of the products were observed by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Energy disperse X-ray analysis (EDX). The hydrophobic property of the treated samples was described by static water contact angles (CAs) and sliding water contact angles (SA) measurement. The stability under ambient condition and durability for corrosive liquid of the surperhydrophobic samples were also investigated in this paper. An analytical characterization revealed that the spherical-like alpha-FeOOH films with micro-nano structure uniformly deposited on the wood surface and OTS molecules combined with alpha-FeOOH films. The water contact angle of the as-prepared samples reached as high as 158 degrees and the sliding angle was about 4 degrees. The prepared superhydrophobic wood surface still maintained the superhydrophobic property when stored under ambient condition for 3 months or immersed in a sodium hydroxide solution of pH 12 and a hydrochloric acid solution of pH 2 for 2 h at room temperature. (C) 2012 Elsevier B.V. All rights reserved.