Superhydrophobic alumina surface based on stearic acid modification

被引：100

作者：

Feng, Libang ^{[1
]}

Zhang, Hongxia ^{[1
]}

Mao, Pengzhi ^{[1
]}

Wang, Yanping ^{[1
]}

Ge, Yang ^{[1
]}

机构：

[1] Lanzhou Jiaotong Univ, Sch Mechatron Engn, Lanzhou 730070, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 09期

关键词：

Alumina; Superhydrophobic; Stearic acid; Roughened; Porous; Structure; AL2O3 COATING FILMS; HIGH TRANSPARENCY; THIN-FILMS; FABRICATION; SPECTRA; ENERGY;

D O I：

10.1016/j.apsusc.2010.11.143

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel superhydrophobic alumina surface is fabricated by grafting stearic acid layer onto the porous and roughened aluminum film. The chemical and phase structure, morphology, and the chemical state of the atoms at the superhydrophobic surface were investigated by techniques as FTIR, XRD, FE-SEM, and XPS, respectively. Results show that a super water-repellent surface with a contact angle of 154.2 degrees is generated. The superhydrophobic alumina surface takes on an uneven flowerlike structure with many nanometer-scale hollows distribute in the nipple-shaped protrusions, and which is composed of boehmite crystal and gamma-Al2O3. Furthermore, the roughened and porous alumina surface is coated with a layer of hydrophobic alkyl chains which come from stearic acid molecules. Therefore, both the roughened structure and the hydrophobic layer endue the alumina surface with the superhydrophobic behavior. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3959 / 3963

页数：5

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