用于铝基板长期抗腐蚀的超疏水性 NiAl-LDHs 复合涂层

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-04-01 DOI:10.1021/acs.langmuir.5c00273

Quan Zou, Kaixi Deng, Ying Cui, Yange Ma, Bo Chen, Qian Sun, Shuangliang Zhao

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引用次数: 0

摘要

由于其独特的表面结构和性能，超疏水表面在耐腐蚀应用中表现出巨大的潜力。本文首先采用VO43 -阴离子插层法在Al基体表面制备了NiAl-LDHs复合涂层，并用硬脂酸（SA）进行改性。最终制备的SA-LDHs-VO43 -涂层具有优异的疏水性和自清洁能力，其水接触角约为155.7±1.5°。此外，与未处理的Al衬底相比，SA-LDHs-VO43覆盖Al材料的腐蚀电流密度降低了约4个数量级。试验结果表明，SA-LDHs-VO43—包覆Al材料的耐蚀效率高达99.95%，表明该涂层对Al基体的耐蚀能力有显著增强。浸泡28天后，SA-LDHs-VO43 -涂层的耐腐蚀效率保持在90%以上，水接触角在120°以上。这些结果表明，制备的SA-LDHs-VO43 -涂层在耐腐蚀方面具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Superhydrophobic NiAl-LDHs Composite Coating for Long-Term Corrosion Resistance of Al Substrates

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Superhydrophobic NiAl-LDHs Composite Coating for Long-Term Corrosion Resistance of Al Substrates

Superhydrophobic surfaces exhibit tremendous potential in corrosion-resistant applications due to their unique surface structures and properties. Herein, a NiAl-LDHs composite coating was first produced on an Al substrate surface by VO₄^3– anion intercalation and modified with stearic acid (SA). The final as-prepared SA-LDHs-VO₄^3– coating exhibited excellent hydrophobicity and self-cleaning abilities, with a water contact angle of about 155.7 ± 1.5°. Furthermore, the corrosion current density of SA-LDHs-VO₄^3–-covered Al material was reduced by approximately 4 orders of magnitude compared to the untreated Al substrate. According to the test, the corrosion resistance efficiency of SA-LDHs-VO₄^3–-covered Al material reached as high as 99.95%, which indicated the significant ability of the coating to strengthen the corrosion resistance of the Al substrate. After 28 days of immersion, the SA-LDHs-VO₄^3– coating maintained over 90% corrosion resistance efficiency and with a water contact angle above 120°. These results demonstrated the bright prospect of the as-prepared SA-LDHs-VO₄^3– coating for a wide range of applications in corrosion resistance.

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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).