Journal Article

Synthesis and characterization of superhydrophobic–superoleophilic surface

Relekar, Brahmanand P., Parale, Vinayak. G., Thorat, Sagar S., Pedraza, Fernado D., Mahadik, Satish A., Lohar, Gaurav M.

2016

Overview

The binary superhydrophobic–superhydrophilic surface has been successfully achieved by a combination of nanoscale texture roughness on micro-textured cotton thread network by layer-by-layer deposition method through the single-step sol–gel route. Furthermore, microstructures with improved wettability were produced, in which silica nanotextures were grown without modifying the chemical method to form superoleophilic and superhydrophobic networks. A superoleophilic surface (oil contact angle 0°) and a superhydrophobic coated cotton fabric with surface free energy of γ total  = 13. 23 ± 0.37 mJ m −2 (water contact angle of 167 ± 1° and a small sliding angle of 4 ± 1°) were successfully obtained. The results were exemplified here by the creation of immiscible oils separation membranes, and the innumerable applications of this technology also include self-cleaning fabrics, antistaining fabrics, water purification, and antiwetting fabrics for military applications. Graphical Abstract

• Publisher: Springer US,Springer Nature B.V,Springer Verlag
• Subject: Ceramics / Chemical Sciences / Chemistry and Materials Science / Composites / Contact angle / Cotton / Fabrics / Free energy / Glass / Hydrophobic surfaces / Hydrophobicity / Inorganic Chemistry / Material chemistry / Materials Science / Military applications / Nanostructure / Nanotechnology / Natural Materials / Networks / Optical and Electronic Materials / Organic chemistry / Original Paper: Functional coatings / Silicon dioxide / Sol gel process / Sol-gel processes / Surface layer / Texture / thin films and membranes (including deposition techniques) / Water purification / Wettability