共 43 条
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.
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页码:271 / 281
页数:11
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