Sandwich-Structured Superhydrophobic Coating for Rapid and Ultrahigh-Efficiency Viscous Oil Separation from Water DOI
Xiang Wu,

Wanze Wu,

Xinting Han

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 22, 2025

Oil spill accidents on the sea and oily wastewater produced in daily life have posed serious threats to environment. Therefore, there is an urgent need for a material that can effectively separate these mixtures using simple operations. Herein, ecofriendly sandwich-structured coating with excellent superhydrophobic/superoleophilic properties was fabricated by situ growth copper mesh cotton fabric substrates. Specifically, versatility of tannic acid (TA) film, including chelation reduction Cu2+, flower-like Cu2S@CuO be grown or surface. Then, Schiff base reaction between TA octadecylamine used hydrophobically modify Water contact angle (WCA) TA-Cu2S-TA-ODA-coated reach 160.8 156.3°. The coated folded into miniature container collect oil, collection efficiency reaching 96.47%. And above 90% even after 10 cycles, its WCA still 155°. Besides, it quickly various oils. Even highly viscous peanut separation flux 90.7% 0.038 mL·cm–2·s–1, respectively, which are much higher than those reported other similar studies. Furthermore, endow fabrics UV-shielding performance compared original fabrics. In particular, 100 tape peeling tests, 7 washing 1 h continuous strong UV irradiation, 24 organic solvent soaking, TA-Cu2S-TA-ODA has superhydrophobic properties.

Language: Английский

Sandwich-Structured Superhydrophobic Coating for Rapid and Ultrahigh-Efficiency Viscous Oil Separation from Water DOI
Xiang Wu,

Wanze Wu,

Xinting Han

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 22, 2025

Oil spill accidents on the sea and oily wastewater produced in daily life have posed serious threats to environment. Therefore, there is an urgent need for a material that can effectively separate these mixtures using simple operations. Herein, ecofriendly sandwich-structured coating with excellent superhydrophobic/superoleophilic properties was fabricated by situ growth copper mesh cotton fabric substrates. Specifically, versatility of tannic acid (TA) film, including chelation reduction Cu2+, flower-like Cu2S@CuO be grown or surface. Then, Schiff base reaction between TA octadecylamine used hydrophobically modify Water contact angle (WCA) TA-Cu2S-TA-ODA-coated reach 160.8 156.3°. The coated folded into miniature container collect oil, collection efficiency reaching 96.47%. And above 90% even after 10 cycles, its WCA still 155°. Besides, it quickly various oils. Even highly viscous peanut separation flux 90.7% 0.038 mL·cm–2·s–1, respectively, which are much higher than those reported other similar studies. Furthermore, endow fabrics UV-shielding performance compared original fabrics. In particular, 100 tape peeling tests, 7 washing 1 h continuous strong UV irradiation, 24 organic solvent soaking, TA-Cu2S-TA-ODA has superhydrophobic properties.

Language: Английский

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