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NIR-Driven Self-Healing Phase-Change Solid Slippery Surface with Stability and Promising Antifouling and
Hao Jiang1, Xiaotong Chen1, Zhiqiang Fang1
1School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
ACS Applied Materials & Interfaces
|June 18, 2024
Summary
This study introduces a novel phase-change solid slippery surface (PCSSS) that offers robust, self-healing antifouling and corrosion protection. The advanced slippery liquid-infused porous surfaces (SLIPSs) demonstrate exceptional performance in marine environments.
Area of Science:
- Materials Science
- Surface Chemistry
- Corrosion Science
Background:
- Slippery liquid-infused porous surfaces (SLIPSs) offer efficient, green antifouling but suffer from lubricant dissipation and lack of robustness.
- Developing stable and self-healing SLIPSs is crucial for practical applications, especially in harsh environments.
Purpose of the Study:
- To design and fabricate a stable, self-healing slippery surface with enhanced antifouling and anti-corrosion properties.
- To investigate the phase-change mechanism and durability of the novel surface under various conditions.
Main Methods:
- Fabrication of a phase-change solid slippery surface (PCSSS) using paraffin, silicone oil, and MXene.
- Evaluation of self-healing capabilities under near-infrared (NIR) irradiation.
- Testing surface stability against high-speed water flushing, centrifugation, and ultrasonic treatment.
- Assessing antifouling performance against proteins, bacteria, and algae.
- Conducting electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization for corrosion resistance.
- Performing a 90-day marine test.
Main Results:
- The PCSSS demonstrated rapid phase-change transformation and complete self-healing under NIR irradiation.
- The surface maintained stability after rigorous mechanical and ultrasonic treatments.
- Exceptional antifouling performance with an adhesion inhibition rate of 99.99% was achieved.
- The PCSSS exhibited excellent corrosion resistance (|Z|0.01Hz = 3.87 × 10^8 Ω·cm^2) and inhibited microbiologically influenced corrosion.
- The 90-day marine test confirmed remarkable antifouling capabilities.
Conclusions:
- The developed PCSSS provides a facile and effective strategy for creating robust slippery surfaces.
- This technology shows significant promise for marine antifouling and corrosion protection applications.
- The NIR-responsive self-healing mechanism addresses key limitations of traditional SLIPS.
