期刊
CHEMICAL ENGINEERING JOURNAL
卷 303, 期 -, 页码 565-574出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.06.038
关键词
Superhydrophobicity; Superhydrophilicity; Special surfaces; Versatile enough; Corrosion resistance
资金
- National Natural Science Foundation of China [51275555, 51475200, 51325501]
- Science and Technology Development Project of Jilin Province [20150519007JH]
- Fundacao para a Ciencia e a Tecnologia (FCT) [SFRH/BPD/109260/2015, RECI/EMS-SIS/0147/2012]
- 111 project of China [B16020]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/109260/2015, RECI/EMS-SIS/0147/2012] Funding Source: FCT
A facile approach is presented in this paper on fabricating a special surface whose wettability can switch reversibly between superhydrophobicty and superhydrophilicity. The approach includes anodic oxidation, gold layer spraying and thiols modification. After modified by the mixed thiol solution, the contact angle of the surface transits sharply from about 160 degrees to 0 degrees, that is to say, from superhydrophobic state to superhydrophilic state, as the pH of the droplet increases from 7 to 12. The approach is versatile enough to play either solid surface. In addition, the as-prepared surface modified with 1 mmol.L-1 HS(CH2)(11)CH3 was proved to be superhydrophobic with low adhesion and exhibited good corrosion resistance property compared with the untreated substrate and anodized sample in the 3.5 wt% NaCl solution. It may provide a new method to improve the anticorrosion of the aluminum alloys. (C) 2016 Elsevier B.V. All rights reserved.
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