Fabrication of robust gold superhydrophobic surface on iron substrate with properties of corrosion resistance, self-cleaning and mechanical durability

被引:22
作者
Cui, Shuo [1 ]
Lu, Shixiang [1 ]
Xu, Wenguo [1 ]
An, Baifeng [2 ]
Wu, Bei [1 ]
机构
[1] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing 100081, Peoples R China
[2] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
Iron; Gold; Superhydrophobic; Corrosion resistance; Self-cleaning; Mechanical durability; MAGNESIUM ALLOY; FACILE FABRICATION; MG ALLOY; COATINGS; WETTABILITY; SEPARATION; POLYMERS; SILICA;
D O I
10.1016/j.jallcom.2017.09.007
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
Well-defined gold nanoflower superhydrophobic surface (SHS) was constructed on iron foil by chemical deposition and anneal. The as-fabricated sample exerts excellent superhydrophobicity with water contact angle (WCA) up to 169 degrees, a sliding angle of about 3 degrees. The samples were characterized via scanning electron microscopy (SEM), X-ray diffraction pattern (XRD) and energy dispersive analysis of X-ray (EDX) to determine the morphology, structure and composition. The electrochemical measurements showed that the resultant surface displayed good corrosion resistance in 3.5 wt% sodium chloride aqueous solution. The effect of pH on the SHS and corrosion resistance ability of the samples at pH = 2, 7 and 9 were explored. The self-cleaning property of the SHS was analyzed. Also, the surface withstood abrasion by 400 grid SiC sandpaper for 2.0 m under 30 kPa, or water impacting for 120 min without losing its superhydrophobicity, indicating prominent mechanical durability. This successful manufacture of the gold SHS with anti-corrosion, self-cleaning, and mechanical durability can pave a prospective way for a variety of practical situations. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:271 / 281
页数:11
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