Mechanically robust superhydrophobic coatings for efficiency and recyclable microplastic removal

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-04-18 DOI:10.1016/j.porgcoat.2025.109328

Anhua Ren , Oriol Rius-Ayra , Min Kang , Nuria Llorca-Isern

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Abstract

Microplastic pollution has become a severe environmental challenge, necessitating efficient and durable removal strategies. In this study, a durable superhydrophobic coating was prepared on 316L by one-step liquid-phase electrodeposition method. The coating was composed of an organic outer layer enriched with the long carbon chains of lauric acid and an inorganic structure featuring MoS₂ as the skeleton and ZnO as the matrix. This unique hierarchical structure contributed to excellent long-lasting superhydrophobicity and mechanical stability. XPS depth profiling confirmed the successful incorporation of MoS₂ and the formation of zinc laurate, which enhanced the micro-nanostructure and chemical robustness. The coating demonstrated a high-water contact angle above 155° and a sliding angle of ≤1°under extreme pH conditions (pH 1–13), demonstrating excellent hydrophobicity and chemical stability. Even after sandpaper wear, sea sand impact, and mud rotation stirring, the coating still remained its superhydrophobic properties and exhibited its superior durability. In addition, the coating showed excellent stability and high efficiency in the microplastic (MPs) removal experiment, providing an economically feasible solution for water pollution control.

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机械坚固的超疏水涂层，高效和可回收的微塑料去除

微塑料污染已成为严峻的环境挑战，需要有效和持久的清除策略。本研究采用一步液相电沉积法在316L表面制备了一种耐久的超疏水涂层。该涂层由富含月桂酸长碳链的有机外层和以MoS 2为骨架、ZnO为基体的无机结构组成。这种独特的分层结构有助于优异的持久超疏水性和机械稳定性。XPS深度分析证实了mos2的成功结合和月桂酸锌的形成，这增强了微纳米结构和化学稳稳性。该涂层在极端pH条件下（pH 1 - 13）具有155°以上的高水接触角和≤1°的滑动角，具有优异的疏水性和化学稳定性。即使经过砂纸磨损、海砂冲击和泥浆旋转搅拌，涂层仍保持其超疏水性，并表现出优异的耐久性。此外，该涂层在去除微塑料（MPs）实验中表现出优异的稳定性和高效率，为水污染治理提供了经济可行的解决方案。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.