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One-step electrodeposition of superhydrophobic Ni/MoS2 nanocomposite coatings
* 1 , 1 , 2 , 2 , 1
1  Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Greece
2  Solar Laboratory, School of Chemical Engineering, National Technical University of Athens, Greece
Academic Editor: Luca Magagnin

Abstract:

Nickel electrolytic deposition is among the most commonly employed methods for numerous applications. Researchers have extensively examined the influence of various electrolysis parameters, as well as the impact of incorporating various additives or secondary reinforcing agents. Particularly composite Ni-MoS2 coatings have attracted significant attention because of their enhanced wear resistant properties. In the present study we investigated the wetting properties of electrodeposited coatings fabricated in a Watts-type electrolyte containing MoS2 nanoparticles at selected concentrations. The electrodeposition was conducted at various current densities by utilizing the standard three-electrode setup. The microstructure of the coatings was studied with x-ray diffractometry (XRD), while the surface morphology through scanning electron microscopy (SEM). The stoichiometric analysis was accomplished by an energy dispersive spectrometer (EDS) coupled on the SEM. Water contact angle measurements were performed by measuring the static water contact angle and the sliding angle at ambient conditions. The results showed that the successfully-prepared nanocomposite coatings exhibited superhydrophobic properties which are enhanced as the current density increases, enabling the utilization of such coatings in self-cleaning and water repellent applications.

Keywords: superhydrophobicity; wettability; electrodeposition; MoS2; nanocomposite coatings
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