Wettability modification of glass surfaces by deposition of carbon-based nanostructured films
Аннотация
The wettability behavior of materials is the subject of numerous scientific investigations due to its significance and relevance to wide range of applications. Here we present comparative analysis of the wettability properties of glass coated by carbon-based nanostructures. Glass surfaces were coated with carbon nanotubes, nanodiamonds, fullerenes, and graphene by drop casting method. These coatings displayed a notable increase in the contact angle (CA) with water drop beads up to the superhydrophobic limit, except for the nanodiamonds coating, which depicted a significant decrease in the CA compared to the clean glass substrate. Moreover, carbon-based soot nanoparticles from candle flame deposited on the glass surface also imparted superhydrophobic characteristics to the glass with CA close to 152°. Carbon nanoparticles were also deposited by femtosecond laser ablation, which is facile, efficient, and contamination-free technique to produce thin homogeneous film containing carbon nanoparticles, which improved the water repellent characteristic while maintaining its transparency in the longer-wavelength part of the visible spectrum. Our studies have shown that carbon nanotubes, fullerenes, graphene and carbon soot depict superhydrophobic characteristics (CA > 150°) and would introduce significant increase in the hydrophobic properties of the surface.