Mustansiriyah Journal of Pure and Applied Sciences

Fabrication of a Superhydrophobic sponge surface Coating by Fe2o3-Mgo nanocomposite

sabah H. Jumaah1 Raad S. Sabry2 Wisam J. Aziz3

1,2,3 Physics Department, College of Science, Mustansiriyah University, Baghdad 10052, Iraq

Keywords: Fe2O3-MgO nanocomposite, stearic acid, sponge surface, hydrothermal method,, super hydrophobicity

Abstract

In this study, Fe2O3 (NPs), MgO(NPs) and Fe2O3-MgO nanocomposite were successfully synthesis by hydrothermal method. By adding different molar ratios of stearic acid( 0.05,0.2 mol) using dip coting method to fabrication of superhydrophobic Fe2o3-Mgo nanocomposite coated on sponge surface was successfully manufactured. The stearic acid act as reduce of surface free energy . The XRD pattern of Fe2O3-MgO nanocomposite shows that the XRD pattern Consists diffraction peaks of both of iron oxide and magnesium oxide. FESEM images of coated sponges show that all coated sponges share a strikingly similar morphology. They show layered structure and roughness in the surface topography, with plates arranged parallel to each other. According to the AFM results, the nanocomposite (Fe2O3-MgO) showed the highest surface roughness among the three samples, with Ra reaching 69.41 nm and Rq 83.30 nm. The contact angles for samples with(0.05 and 0.2) equal 153.8°,158o. respectively. Therefore, there is a direct relationship between the molar ratio of fatty acid to nanocomposite and the contact angle. As the molar ratio increases, the contact angle also increases, due to the increased surface roughness