Self-cleaning transparent superhydrophobic coatings through simple sol-gel processing of fluoroalkylsilane

Shanhu Liu; Xiaojing Liu; Sanjay S. Latthe; Li Gao; Seongpil An; Sam S. Yoon; Baoshun Liu; Ruimin Xing

doi:10.1016/j.apsusc.2015.06.016

Self-cleaning transparent superhydrophobic coatings through simple sol-gel processing of fluoroalkylsilane

Shanhu Liu, Xiaojing Liu, Sanjay S. Latthe, Li Gao, Seongpil An, Sam S. Yoon, Baoshun Liu, Ruimin Xing

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

168 Citations (Scopus)

Abstract

Upon contact with a dusty superhydrophobic surface, moving spherical water drops collect the dust particles and eventually flow off the surface. Herein, we report a very simple one-step approach to fabricate transparent and self-cleaning superhydrophobic coatings via the sol-gel processing of long-chain fluoroalkylsilane. The coating surface exhibited a rough, wrinkled, hill-like morphology similar to the microstructure of the lotus leaf (rough micro-scale papillae), which is promising for superhydrophobicity. The air bags trapped in the rough, hill-like structure allow the water drops to take a round shape with a contact angle of 169°. These round water drops abruptly roll off the coating surface at less than 5°of tilting. No major or minor water-drop pinning was observed during the roll off. The dust-repellent (self-cleaning) property, plastron stability, and durability against water-jet impact were examined on the superhydrophobic coatings.

Original language	English
Pages (from-to)	897-903
Number of pages	7
Journal	Applied Surface Science
Volume	351
DOIs	https://doi.org/10.1016/j.apsusc.2015.06.016
Publication status	Published - 2015 Oct 1

Keywords

Dip coating
Lotus leaf
Plastron layer
Self-cleaning
Sol-gel process
Superhydrophobic

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2015.06.016

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title = "Self-cleaning transparent superhydrophobic coatings through simple sol-gel processing of fluoroalkylsilane",

abstract = "Upon contact with a dusty superhydrophobic surface, moving spherical water drops collect the dust particles and eventually flow off the surface. Herein, we report a very simple one-step approach to fabricate transparent and self-cleaning superhydrophobic coatings via the sol-gel processing of long-chain fluoroalkylsilane. The coating surface exhibited a rough, wrinkled, hill-like morphology similar to the microstructure of the lotus leaf (rough micro-scale papillae), which is promising for superhydrophobicity. The air bags trapped in the rough, hill-like structure allow the water drops to take a round shape with a contact angle of 169°. These round water drops abruptly roll off the coating surface at less than 5°of tilting. No major or minor water-drop pinning was observed during the roll off. The dust-repellent (self-cleaning) property, plastron stability, and durability against water-jet impact were examined on the superhydrophobic coatings.",

keywords = "Dip coating, Lotus leaf, Plastron layer, Self-cleaning, Sol-gel process, Superhydrophobic",

author = "Shanhu Liu and Xiaojing Liu and Latthe, {Sanjay S.} and Li Gao and Seongpil An and Yoon, {Sam S.} and Baoshun Liu and Ruimin Xing",

note = "Funding Information: We greatly appreciate the support of the National Natural Science Foundation of China ( 21101056 , 21105021 ). The research was also supported by KETEP 20124030200120 and 20133030010890 . Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.apsusc.2015.06.016",

language = "English",

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AU - Liu, Shanhu

AU - Liu, Xiaojing

AU - Latthe, Sanjay S.

AU - Gao, Li

AU - An, Seongpil

AU - Yoon, Sam S.

AU - Liu, Baoshun

AU - Xing, Ruimin

N1 - Funding Information: We greatly appreciate the support of the National Natural Science Foundation of China ( 21101056 , 21105021 ). The research was also supported by KETEP 20124030200120 and 20133030010890 . Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Upon contact with a dusty superhydrophobic surface, moving spherical water drops collect the dust particles and eventually flow off the surface. Herein, we report a very simple one-step approach to fabricate transparent and self-cleaning superhydrophobic coatings via the sol-gel processing of long-chain fluoroalkylsilane. The coating surface exhibited a rough, wrinkled, hill-like morphology similar to the microstructure of the lotus leaf (rough micro-scale papillae), which is promising for superhydrophobicity. The air bags trapped in the rough, hill-like structure allow the water drops to take a round shape with a contact angle of 169°. These round water drops abruptly roll off the coating surface at less than 5°of tilting. No major or minor water-drop pinning was observed during the roll off. The dust-repellent (self-cleaning) property, plastron stability, and durability against water-jet impact were examined on the superhydrophobic coatings.

AB - Upon contact with a dusty superhydrophobic surface, moving spherical water drops collect the dust particles and eventually flow off the surface. Herein, we report a very simple one-step approach to fabricate transparent and self-cleaning superhydrophobic coatings via the sol-gel processing of long-chain fluoroalkylsilane. The coating surface exhibited a rough, wrinkled, hill-like morphology similar to the microstructure of the lotus leaf (rough micro-scale papillae), which is promising for superhydrophobicity. The air bags trapped in the rough, hill-like structure allow the water drops to take a round shape with a contact angle of 169°. These round water drops abruptly roll off the coating surface at less than 5°of tilting. No major or minor water-drop pinning was observed during the roll off. The dust-repellent (self-cleaning) property, plastron stability, and durability against water-jet impact were examined on the superhydrophobic coatings.

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Self-cleaning transparent superhydrophobic coatings through simple sol-gel processing of fluoroalkylsilane

Abstract

Keywords

ASJC Scopus subject areas

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