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首页> 外文期刊>Applied Surface Science >Nanosecond laser ablation for enhanced adhesion of CuO nanowires on copper substrate and its application for oil-water separation
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Nanosecond laser ablation for enhanced adhesion of CuO nanowires on copper substrate and its application for oil-water separation

机译：纳秒激光烧蚀增强CuO纳米线在铜基板上的附着力及其在油水分离中的应用

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摘要

Nanotextured materials have been used extensively for water treatment and purification to minimize wastewater pollution from factories and oil spill accidents from damaging our ecosystem. With constant erosion from the environment, the adhesion of nanomaterials to surfaces has thus been a long-standing challenge for practical deployment in industrial settings. Thermally-induced oxidative growth of copper oxide (CuO) nanowires (NWs) on Cu foil is a readily accessible and scalable technique of mass producing nanostructures. However, the NWs readily exfoliate from the substrate, limiting its utilization. The use of a pulsed 1064 nm laser texturing approach to greatly improve adhesion and sturdiness of CuO NWs array on Cu foil with laser fabricated microholes is presented. This is a catalyst-free and controllable process to create functional surfaces with microholes lined with hierarchical CuO NWs array. The resultant superhydrophilic nano-textured surface demonstrated the ability as an efficient filter for potential applications in separation of oil-water emulsions. It achieves enhanced speed of separation withstanding higher intrusion pressure and higher efficiency. This work has a great potential for scalable applications in high-efficiency oily wastewater treatment, underwater oil manipulation, self-cleaning and bioadhesion control.
机译：纳米纹理材料已被广泛用于水处理和净化，以最大程度地减少工厂的废水污染以及因破坏我们的生态系统而造成的漏油事故。由于受到环境的持续侵蚀，因此纳米材料在表面上的粘附一直是工业环境中实际部署的长期挑战。在铜箔上热诱导氧化铜（CuO）纳米线（NWs）的氧化生长是一种易于获得且可扩展的大规模生产纳米结构的技术。但是，NW容易从基材上脱落，限制了其利用率。提出了使用脉冲1064 nm激光织构化方法来极大地提高带有激光制造的微孔的Cu箔上的CuO NWs阵列的附着力和坚固性。这是一种无催化剂且可控制的过程，可创建带有排列有分层CuO NW阵列的微孔的功能表面。所得的超亲水纳米纹理表面证明了其作为油水乳液分离中潜在应用的有效过滤器的能力。它可以实现更高的分离速度，同时具有更高的入侵压力和更高的效率。这项工作在高效含油废水处理，水下油处理，自清洁和生物粘附控制方面的可扩展应用具有巨大潜力。

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