Open AccessFabrication of superoleophobic surfaces on Zn substrates by electrochemical etching and perfluorooctanoic acid modification
Author(s) -
Liu Xin,
Song Jinlong,
Liu Jiyu,
Zhang Fangdong,
Sun Jing,
Xu Wenji
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2015.0372
Subject(s) - contact angle , materials science , wetting , perfluorooctanoic acid , scanning electron microscope , etching (microfabrication) , hexadecane , chemical engineering , electrochemistry , electrolyte , surface modification , fabrication , nanotechnology , composite material , electrode , chemistry , organic chemistry , layer (electronics) , medicine , alternative medicine , pathology , engineering
Superoleophobic surfaces on zinc substrates are fabricated via electrochemical etching and perfluorooctanoic acid modification. The wettability, surface morphology and chemical composition of the sample surfaces are investigated using optical contact angle measurements, scanning electron microscopy and X‐ray diffraction, respectively. The influences of the main processing parameters, for example, etching time, current density and electrolyte composition, on the wettability are also studied. The results show that the processed surfaces are composed of micro/nanoscale voids and suspended structures, presenting superoleophobicity with the contact angles of water, glycerin, peanut oil and hexadecane exceeding 150° and the sliding angles of them being <20°.