The preparation of superoleophobic and superhydrophobic
surfaces
requires surface microgeometries and surface chemistry. In this study,
an economical and environmentally friendly electrochemical etching
method was developed to prepare superoleophobic and superhydrophobic
titanium surfaces. Scanning electron microscopy (SEM), X-ray diffraction
(XRD), Fourier transform infrared spectrophotometry (FTIR), energy-dispersive
spectroscopy (EDS), and optical contact angle measurements were used
to characterize the surface morphologies, crystal structures, chemical
compositions, and wettability of the surfaces for both water and oil.
The results show that the prepared superoleophobic surface has water,
glycerol, and hexadecane contact angles above 150°, with rolling
angles of only 1–2°. Analysis of the electrolyte, the
reaction process, and the products demonstrates that the proposed
method is inexpensive and environmentally friendly. The effects of
electrochemical parameters such as current density, electrochemical
etching time, electrolyte temperature, and electrolyte concentration
on the surface wettability for water, glycerol, and hexadecane were
also investigated. Superoleophobicity and superhydrophobicity can
be selectively obtained by varying the electrochemical parameters.
The proposed method is believed to be adopted for industrial production
of superoleophobic and superhydrophobic titanium surfaces.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.