Superhydrophobic Aluminum Surfaces Modified with Hierarchically Structured Oleates-Intercalated LDH Arrays for Anticorrosion: Structure, Anticorrosion Enhancement, and Mechanism.

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-05-21 DOI:10.1021/acs.langmuir.5c00418

Xin Guo,Zhe An,Jing He

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引用次数: 0

Abstract

The potential applications of superhydrophobic materials in marine environments, particularly in terms of corrosion resistance and antibiofouling, have captured the intense interest of researchers and engineers. Herein, superhydrophobic aluminum surfaces modified with hierarchical structured oleate anions intercalated layered double hydroxide arrays (MgAl-OA--LDHs@AS) were fabricated by a one-step hydrothermal method, and detailed structural manipulation was carried out. Comprehensive structural characterizations were conducted, including analyses of morphology, composition, roughness, and wettability. The obtained superhydrophobic surfaces were found to be uniform, compact, and stable. By modulating the surface roughness, the superhydrophobicity was significantly improved, achieving a water contact angle of 154.0° and a roll-off angle of 4.2°. The anticorrosion effect was investigated by monitoring changes in electrochemical potentiodynamic polarization and impedance spectroscopy measurements. MgAl-OA--LDHs@AS demonstrated corrosion resistance with a relatively low corrosion current density (Icorr) of 2.0 × 10-10 A·cm-2. MgAl-OA--LDHs@AS effectively resisted electrochemical corrosion and provided excellent long-term corrosion protection for at least 30 days. The anticorrosion mechanism was proposed, revealing the excellent performance of the anticorrosion membrane.

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用层次化油酸嵌入LDH阵列修饰超疏水铝表面的防腐：结构、防腐增强和机理。

超疏水材料在海洋环境中的潜在应用，特别是在耐腐蚀和抗污方面，已经引起了研究人员和工程师的强烈兴趣。本文采用一步水热法制备了层次化结构油酸阴离子嵌入层状双氢氧化物阵列（MgAl-OA--LDHs@AS）修饰的超疏水铝表面，并进行了详细的结构操作。进行了全面的结构表征，包括形貌、成分、粗糙度和润湿性分析。所得的超疏水表面均匀、致密、稳定。通过调节表面粗糙度，超疏水性得到显著改善，水接触角为154.0°，滚转角为4.2°。通过监测电化学动电位极化变化和阻抗谱测量来考察其防腐效果。MgAl-OA--LDHs@AS具有较低的腐蚀电流密度（Icorr），为2.0 × 10-10 a·cm-2。MgAl-OA--LDHs@AS有效抵抗电化学腐蚀，提供至少30天的长期防腐保护。提出了防腐机理，揭示了该防腐膜的优良性能。

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).