Abstract

Surfaces with robust and healable superhydrophobicity have attracted much attention in recent years due to an improved life-time. Herein, flower-like nickel hydroxide (Ni(OH)₂) micro-nanoparticles are prepared and used as reservoirs to load octadecylamine (ODA). Superhydrophobic cotton fabric is fabricated by dip-coating ODA modified Ni(OH)₂ particles (Ni(OH)₂@ODA) using polydimethylsiloxane (PDMS) as hydrophobic binder. The influence of Ni(OH)₂@ODA content on the surface morphology and wettability of the fabric is systematically investigated. The modification processes do not cause any discernable decrease in the mechanical and thermal properties of the fabric. The fabric exhibits excellent antifouling and self-cleaning performances, and can maintain superhydrophobicity after 700 abrasion cycles, strong acidic or alkaline corrosion and long-term UV exposure. It can effectively separate different oil–sea water mixtures with high separation efficiency, high flux and good reusability. Significantly, the superhydrophobicity of a damaged fabric surface from O₂ plasma treatment can be automatically restored within 6 h at room temperature and 60 min at 50 °C. This facile and effective strategy may be useful for the development of robust protective clothing for various applications.

Graphic abstract

中文翻译：

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花状Ni（OH）2 @ODA微纳米粒子的强韧可修复超疏水棉织物的制备

摘要

近年来，由于使用寿命延长，具有强而可治愈的超疏水性的​​表面备受关注。在此，制备了花状的氢氧化镍（Ni（OH）₂）微纳米颗粒，并将其用作装载十八烷基胺（ODA）的储存器。超疏水性棉织物是通过浸涂ODA改性的Ni（OH）₂颗粒（Ni（OH）₂ @ODA）制成的，使用聚二甲基硅氧烷（PDMS）作为疏水性粘合剂。Ni（OH）_2的影响系统地研究了@ODA含量对织物的表面形态和润湿性的影响。改性过程不会引起织物机械和热性能的任何明显下降。该织物具有出色的防污和自清洁性能，在700次磨损循环，强酸或强碱腐蚀以及长期暴露于紫外线后，可以保持超疏水性。它可以高分离效率，高通量和良好的可重复使用性来有效分离不同的油-海水混合物。值得注意的是，O ₂损坏的织物表面的超疏水性血浆处理可以在室温下6小时内和50°C下60分钟内自动恢复。这种简便有效的策略对于开发适用于各种应用的坚固防护服可能有用。

图形摘要