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Constructing Robust and Multifunctional Superamphiphobic Surfaces by Using Two Different Nanostructures of Silicon
Nan Zhou1, Shuhan Hou1, Insub Noh2
1School of Materials Science and Engineering, Changzhou University, Changzhou 213164, People's Republic of China.
Langmuir : the ACS Journal of Surfaces and Colloids
|March 3, 2025
Summary
Researchers developed durable superamphiphobic surfaces using a simple spray method with mixed silica nanostructures. These robust surfaces exhibit excellent water and oil repellency, self-cleaning, and anti-icing properties for industrial applications.
Area of Science:
- Materials Science
- Surface Chemistry
- Nanotechnology
Background:
- Superamphiphobic surfaces offer combined superhydrophobic and superoleophobic properties, crucial for advanced applications.
- Existing fabrication methods often involve complex procedures, high costs, and result in poor durability, hindering commercialization.
- There is a need for robust, easily fabricated superamphiphobic surfaces with enhanced performance.
Purpose of the Study:
- To develop a simple and robust method for fabricating superamphiphobic surfaces.
- To investigate the effect of mixed silica nanostructures on surface properties and durability.
- To evaluate the self-cleaning, antifouling, and anti-icing capabilities of the fabricated surfaces.
Main Methods:
- Fabrication of superamphiphobic surfaces via a simple spraying method using a mixture of nanosheet and nanospherical silicon dioxide.
- Characterization of surface structure using electron microscopy (implied).
- Evaluation of surface wettability (contact angle and sliding angle) for water and olive oil.
- Assessment of surface durability through various tests: abrasion, ultrasonic treatment, acid-base immersion, UV irradiation, and boiling water jet impact.
- Testing of antifouling, self-cleaning, and anti-icing properties.
Main Results:
- A double-scale 'reentrant' micronano structure was formed using mixed silica nanostructures, achieving superamphiphobicity (water CA 158°, SA 1°; oil CA 154°, SA 3°).
- Control surfaces with single nanostructures exhibited only superhydrophobicity.
- The fabricated surfaces demonstrated exceptional mechanical robustness and durability, retaining wettability after harsh tests.
- Significant improvements in anti-icing performance were observed, with icing time extended from 55 to 342 seconds.
Conclusions:
- The simple spray method using mixed silica nanostructures effectively creates robust superamphiphobic surfaces.
- The unique reentrant structure enhances durability and multifunctional properties, including anti-icing and self-cleaning.
- These robust superamphiphobic surfaces hold significant potential for diverse industrial applications requiring liquid repellency and surface protection.
