Superhydrophobic self-similar nonwoven-titanate nanostructured materials
| Autor: | Amit Rawal, Lívia Vásárhelyi, Gábor Kozma, Sumit Sharma, Ferhan Ayaydin, Ildikó Y. Tóth, Ákos Kukovecz, Shyam Jee |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanostructured materials Nanowire Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Titanate 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Water repellent Fiber Wetting Lotus effect 0210 nano-technology Layer (electronics) |
| Zdroj: | Journal of Colloid and Interface Science. 598:93-103 |
| ISSN: | 0021-9797 |
| Popis: | Hypothesis Self-similarity is a scale-invariant irregularity that can assist in designing a robust superhydrophobic material. A combinatorial design strategy involving self-similarity and dual-length scale can be employed to create a new library of a doubly re-entrant, disordered, and porous network of superhydrophobic materials. Asymmetric wettability can be engineered in nonwoven materials by rendering them with superhydrophobic characteristics on one side. Experiments A facile, scalable, and inexpensive spray-coating technique was used to decorate the weakly hydrophobic stearate-treated titanate nanowires (TiONWs) over the self-similar nonwoven material. Laser scanning confocal microscopy was employed to image the impalement dynamics in three dimensions. With the aid of X-ray microcomputed tomography analysis, the three-dimensional (3D) nonwoven structural parameters were obtained and analyzed. The underwater superhydrophobic behavior of the prepared samples was investigated. Findings A classic 'lotus effect' has been successfully endowed in self-similar nonwoven-titanate nanostructured materials (SS-Ti-NMs) from a nonwoven material that housed the air pockets in bulk and water repellent TiONWs on the surface. The finer fiber-based SS-Ti-NMs exhibited lower roll-off angles and a thinner layer of water on its surface. An asymmetric wettability and the unusual display of underwater superhydrophobic behavior of SS-Ti-NMs have been uncovered. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect