Abstract
Hot water droplet and oils induced air cushion failure,intensively used fluorine-containing chemicals,tedious preparation process,etc.are the main bottlenecks of the current artificially fabricated superhydrophobic materials,restricting their large-scale production and real-world applications.Herein,a facile,scalable,fluorine-free spray-coating strategy was employed to achieve superhydrophobic and superoleophobic polymerized organosilanes/Al2O3 nanoparticles (POS/Al2O3 NPs) coatings.The POS/Al2O3 NPs coating was achieved through hydrolytic condensation of tetraethyl orthoilicate (TEOS) and hexadecyltrimethoxysilane (HDTMS) in the presence of Al2O3 NPs.A variety of analytical techniques including scanning electron microscopy (SEM),X-ray photoelectron spectroscopy (XPS),energy dispersive X-ray photoelectron spectroscopy (EDS) were used to investigate the fabricated coatings.The POS/Al2O3 NPs coating features high contact angle (＞158°) and low sliding angle (＜5°) for water,glycerol,and ethylene glycol droplets with different surface tensions,verifying both superhydrophobic and superoleophobic properties.Moreover,the coatings present extremely low surface adhesion force,excellent liquid-driven self-cleaning ability,and hot water repellency.The superamphiphobic POS/Al2O3 NPs coating exhibits promising applications in various fields including self-cleaning,corrosion resistance,and preventing scald as this strategy is applicable on various substrates.
基金项目
This work was financially supported by the National Natural Science Foundation of China(41806089)
This work was financially supported by the National Natural Science Foundation of China(41827805)
NETL
NSTL
万方数据