Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 66, Issue -, Pages 74-81Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2020.06.035
Keywords
Al2O3; Self-cleaning; Surface coating; Thermal stability; Supehydrophobicity; Wettability
Funding
- National Natural Science Foundation of China [41806089, 41827805]
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A novel superhydrophobic material was developed using a simple spray-coating strategy to overcome the main bottlenecks of current artificially fabricated materials, achieving both superhydrophobic and superoleophobic properties with promising applications in various fields.
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 degrees) and low sliding angle (<5 degrees) 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. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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