Development of a Zeolitic Imidazolate Framework Based Superhydrophobic Surface with Abrasion Resistance, Corrosion Protection, and Anti-icing

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-03-12 DOI:10.1021/acs.langmuir.4c05041

Dan Zhang, Yue Zhao, Qi He, Zengxi Pan, Guohong Ma

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Abstract

Herein, a superhydrophobic surface was designed and fabricated based on the “lotus effect” construction mechanism. The zeolitic imidazolate framework (ZIF-90) micro-nanoparticles were initially synthesized via a one-pot method, combined with long-chain stearic acid (STA), and subsequently embedded in polyvinyl butyral (PVB) to form a superhydrophobic surface at room temperature. The superhydrophobic surface demonstrated mechanical stability and retained its superhydrophobicity with a water contact angle (CA) greater than 150°, even at a wear distance of 400 cm. The composite coating formed by applying this superhydrophobic surface to magnesium (Mg) alloy exhibited a high corrosion potential (E_corr = −0.86 V) and a low corrosion current density (i_corr = 3.66 × 10^–12 A·cm^–2) compared to the uncoated Mg substrate (E_corr = −1.53 V, i_corr = 1.14 × 10^–4 A·cm^–2), indicating that the coating effectively enhances the corrosion resistance of the substrate. Notably, the superhydrophobic composite coating demonstrated corrosion resistance durability with a high charge transfer resistance (R_ct = 5.12 × 10⁹ Ω·cm²) after 5 days of immersion in 3.5 wt % NaCl aqueous solution. In addition, the as-prepared superhydrophobic surface also displayed excellent performance in self-cleaning and anti-icing. We believe that this work can facilitate the application of ZIFs on superhydrophobic surfaces and provide a new approach for metal corrosion protection.

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具有耐磨性、防腐蚀性和防冰性的沸石基咪唑盐骨架超疏水表面的研制

基于“荷花效应”构建机理，设计并制备了一种超疏水表面。采用一锅法制备了沸石咪唑酸骨架（ZIF-90）纳米颗粒，并与长链硬脂酸（STA）结合，在室温下包埋于聚乙烯醇丁醛（PVB）中形成超疏水表面。超疏水表面表现出机械稳定性，即使在400 cm的磨损距离下，水接触角（CA）大于150°时也能保持其超疏水性。与未涂覆的Mg基体（Ecorr = - 1.53 V, icorr = 1.14 × 10-4 a·cm-2）相比，将该超疏水表面涂覆在镁（Mg）合金表面形成的复合涂层具有较高的腐蚀电位（Ecorr = - 0.86 V）和较低的腐蚀电流密度（icorr = 3.66 × 10-12 a·cm-2），表明该涂层有效提高了基体的耐蚀性。值得注意的是，在3.5 wt % NaCl水溶液中浸泡5天后，超疏水复合涂层表现出耐腐蚀耐久性和高电荷转移阻力（Rct = 5.12 × 109 Ω·cm2）。此外，制备的超疏水表面还表现出优异的自清洁和防冰性能。我们相信这项工作将促进zif在超疏水表面的应用，并为金属腐蚀防护提供新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).