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Nanotechnology

Robust Photothermal Superhydrophobic Coatings Show Promising Results

Strategic Insights

— 1 min read

Researchers at Southwest Petroleum University in Sichuan, People's Republic of China, have made a significant breakthrough in the development of robust photothermal superhydrophobic coatings. According to a recent study published in Chemical Engineering Science, the team has successfully created a coating that exhibits excellent superhydrophobic properties, including a water contact angle of 165 degrees and a rolling angle of 3.6 degrees. This achievement is a crucial step towards practical large-scale applications of environmentally friendly and robust superhydrophobic coatings.

Key Takeaways:

  • The research team used a two-step spraying technique to prepare the superhydrophobic coatings, incorporating micro and nano-structured Al2O3-TiN particles.
  • The optimized coating exhibits excellent superhydrophobic properties, including a water contact angle of 165 degrees and a rolling angle of 3.6 degrees.
  • The coating remains stable under harsh conditions, such as tape stripping, sandpaper abrasion, and solution immersion, and exhibits good weathering and corrosion resistance.
  • The Al2O3-TiN coating has excellent photothermal and anti-icing/deicing properties, attributed to the high mechanical stability of the superhydrophobic surface and the photothermal effect of TiN nanoparticles.
  • The impedance value of the coating can reach 10^10 Omega·cm^2 during the initial period of immersion in 3.5 wt% NaCl solution.
  • The research provides an important guidance for the practical large-scale application of environmentally friendly and robust superhydrophobic coatings.

Statistics:

  • Water contact angle: 165 degrees
  • Rolling angle: 3.6 degrees
  • Impedance value: 10^10 Omega·cm^2
  • NaCl solution concentration: 3.5 wt%

Sources:

  • NewsRx. Data on Nanotechnology Reported by Researchers at Southwest Petroleum University (Robust, Photothermal Superhydrophobic Epoxy Anti-corrosion Coating Based On Micro Nano Structured Al2o3-tin). Nanotechnology Weekly. September 1, 2025; p 103.
  • Robust, Photothermal Superhydrophobic Epoxy Anti-corrosion Coating Based On Micro Nano Structured Al2o3-tin. Chemical Engineering Science, 2025;315.

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