Durable polydimethylsiloxane vitrimer-coated laser-textured metallic surfaces for fog harvesting

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-06-20 DOI:10.1016/j.apsusc.2025.163879

Qinchao Li, Yi Zheng, Ke Li, Fangfang Luo

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引用次数: 0

Abstract

Based on in-depth studies of natural superhydrophobic surfaces, researchers have developed various artificial surfaces. And the development of eco-friendly preparation methods for durable, large-area superhydrophobic surfaces is still in progress. This study presents a scalable approach to fabricate superhydrophobic metallic surfaces by integrating femtosecond laser texturing with polydimethylsiloxane (PDMS) vitrimer coatings. The dynamic boronic ester crosslinks in PDMS provide autonomous self-healing capability while maintaining strong mechanical stability and corrosion resistance. Spin-coated PDMS vitrimers transformed laser-textured superhydrophilic surfaces into superhydrophobic ones, yielding a ∼ 200 % enhancement in fog harvesting efficiency versus uncoated flat substrates. Moreover, dip-coating achieved similar performance, demonstrating method versatility. The synergistic combination of laser-induced micro/nanostructures and dynamic covalent PDMS networks produces durable, uniform, self-repairing surfaces, offering an cost-effective, environmentally sustainable solution for fog harvesting.

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耐用的聚二甲基硅氧烷玻璃体涂层激光纹理金属表面雾收集

在对天然超疏水表面深入研究的基础上，研究人员开发了各种人工表面。而耐用、大面积超疏水表面的环保制备方法的开发仍在进行中。本研究提出了一种可扩展的方法，通过将飞秒激光纹理与聚二甲基硅氧烷（PDMS）玻璃体涂层相结合来制造超疏水金属表面。PDMS中的动态硼酯交联在保持较强的机械稳定性和耐腐蚀性的同时，提供了自主自愈能力。自旋涂覆的PDMS玻璃体将激光纹理的超亲水表面转化为超疏水表面，与未涂覆的平面基板相比，雾收集效率提高 ~ 200 %。此外，浸渍涂层取得了类似的性能，证明了方法的通用性。激光诱导的微/纳米结构和动态共价PDMS网络的协同结合产生了持久、均匀、自我修复的表面，为雾收集提供了一种经济、环保的可持续解决方案。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.