期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 403, 期 -, 页码 29-34出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2012.03.051
关键词
Superhydrophobic; Hydrothermal method; Wood surface; CAs; alpha-FeOOH films
资金
- Program for New Century Excellent Talents in University [NCET-10-0311]
- National Natural Science Foundation of China [31000271]
- Fundamental Research Funds for the Central Universities [DL09DBQ01]
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.
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