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Issue 46, 2017
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Mussel-inspired chemistry for preparation of superhydrophobic surfaces on porous substrates

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Abstract

A facile and versatile mussel-inspired surface modification approach was used to modify porous materials (wood, sponge and stainless steel mesh) to fabricate a superhydrophobic surface. The as-formed polydopamine (PDA) coating can tightly adhere on the porous structure surface, which also provides a versatile platform for secondary reactions to anchor hydrophobic long-chain groups for hierarchical superhydrophobic surfaces preparation. The as-prepared surfaces showed excellent superhydrophobicity with a water contact angle (CA) of about 153°, even after being subjected to harsh conditions, including strong acid–base and organic solvent immersion, high-temperature boiling, ultrasonic washing, and ultraviolet aging. The produced superhydrophobic sponge exhibited an oil absorption capacity of 73–156 times its own weight for a series of oils and organic solvents and showed good recyclability. The obtained stainless steel mesh also presented good oil–water separation ability. Importantly, this modification method provides an efficient, versatile, easy, and mild route to prepare superhydrophobic surfaces for various porous substrates, resulting in a wide range of potential applications.

Graphical abstract: Mussel-inspired chemistry for preparation of superhydrophobic surfaces on porous substrates

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Article information


Submitted
28 Apr 2017
Accepted
30 May 2017
First published
05 Jun 2017

This article is Open Access

RSC Adv., 2017,7, 29149-29158
Article type
Paper

Mussel-inspired chemistry for preparation of superhydrophobic surfaces on porous substrates

K. Wang, Y. Dong, Y. Yan, S. Zhang and J. Li, RSC Adv., 2017, 7, 29149
DOI: 10.1039/C7RA04790H

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    [Original citation] - Published by The Royal Society of Chemistry.

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