Superhydrophobic Coating Using TiO₂ NPs/PMHS Composite for Self‐Cleaning Application

Abstract

In the present research work, spray deposition technique is adopted for the fabrication of superhydrophobic coating on glass slide using TiO2 nanoparticles and polymethylhydrosyloxane (PMHS) composite. The prepared superhydrophobic coating revealed hierarchical surface morphology due to different micro and nanoscaled grains of TiO2 NPs/PMHS composite. The water drops hardly stay on the superhydrophobic coating and roll off the surface at sliding angle of 6° due to high water contact angle of 163 ± 2°. As a result, the prepared superhydrophobic coating revealed excellent self‐cleaning performance. To evaluate the mechanical durability the prepared superhydrophobic coating, the coating surface is exposed to water jet, water drop impact, adhesive tape peeling, and sandpaper abrasion tests. This coating approach can be applied to the substrates of any size and shape.

Recent Advances in Multifunctional Mechanical–Chemical Superhydrophobic Materials

“…Photocatalysis ( Liu et al, 2020a ; Sutar et al, 2020 ; Zhu et al, 2021b ) can produce self-cleaning effects ( Zhu et al, 2020b ). Superhydrophobic materials with photocatalytic performance can convert light energy into chemical energy to decompose organic pollutants.…”

Self-cleaned zirconia coatings prepared using a co-precursor sol–gel method

“…Such coatings are able to break down the impurities when exposed to light taking away the dirt from their surface. Titanium dioxide (TiO 2 ) coatings are well-known for the hydrophilic self-cleaning surfaces [6][7][8][9] owing to their favourable physical and chemical properties.…”