Journal
APPLIED SURFACE SCIENCE
Volume 499, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.143933
Keywords
Superhydrophobic surfaces; Wrinkled SiO2 particles; Stability; Ultraviolet resistance; Photocatalytic properties
Categories
Funding
- National Key Research and Development Program of China [2016YFE0202700]
- National Natural Science Foundation of China [NSFC 51603053]
- Application Technology Research and Development Plan of Heilongjiang Province [GX16A008]
- Fundamental Research Funds for the Central Universities
- International Science AMP
- Technology Cooperation Program of China [2015DFA50050]
- Defense Industrial Technology Development Program [JCKY2016604C006]
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It has been broadly studied to ensure the protection of magnesium alloy by superhydrophobic surface. In this work, the layered TiO2 was prepared in response to the AZ31 Mg alloy by hydrothermal method and loaded wrinkled silicon dioxide (KCC-1) on the layer by electrostatic self-assembly to build a pod-like structure. After modification by stearic acid, the surface shows superhydrophobicity. The morphology, structure and composition of the surface were characterized by scanning electron microscope (SEM), the X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR), respectively. The anticorrosive effect of the superhydrophobic surface was investigated by detecting the electrochemical impedance spectroscopy and polarization curves in 3.5 wt% NaCl solution for a week. Superhydrophobic surfaces also exhibited chemical stability, physical stability and ultraviolet light tolerance. In addition, the TiO2 containing in the film had a certain photocatalytic performance on decomposition of organic contaminants. Combining the self-cleaning property, the surface showed excellent adaptability to the outdoor environment.
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