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首页> 外文期刊>RSC Advances >Superhydrophobic engineering materials provide a rapid and simple route for highly efficient self-driven crude oil spill cleanup
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Superhydrophobic engineering materials provide a rapid and simple route for highly efficient self-driven crude oil spill cleanup

机译：超疏水工程材料为高效的自驱式原油溢油清理提供了快速简便的途径

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Traditional superhydrophobic material use depends on two processes: creating a rough structure on a material surface and modifying the rough surface with low surface energy materials. However, common preparation methods are time-consuming, complex and cost-ineffective. Furthermore, these methods usually rely on chemicals, and evidently that will restrict mass preparation and application of superhydrophobic materials. This study reports a simple polypropylene (PP) solution-based process for producing PP hierarchical structures on commercial copper mesh (low surface energy materials), without modifying the low surface energy materials. The hierarchical structures of copper meshes, surface modified with PP, can be rationally controlled by optimizing the PP concentration. The obtained copper mesh showed contact and rolling off angles of 162° and 7°, respectively. Importantly, no significant performance loss was observed after the superhydrophobic copper meshes were continuously and drastically rinsed with 3.5 wt% NaCl solution, or repeated tearing with an adhesive tape for more than 30 cycles, indicating its good durability. After surface modification with PP particles, the copper mesh exhibits both excellent superhydrophobicity and superoleophilicity. Additionally, the as-prepared copper mesh can self-float on water surface when deformed into a “miniature boat” shape. Meanwhile, self-driven spilled oil cleanup was achieved using a superhydrophobic copper mesh-formed miniature boat. The miniature boat can realize energy conservation as well as high efficiency. The cleanup rate of the boat is as high as 97.1%, demonstrating its great potential in environmental remediation applications.
机译：传统的超疏水材料的使用取决于两个过程：在材料表面上创建粗糙结构，以及使用低表面能材料修改粗糙表面。然而，普通的制备方法耗时，复杂且成本低廉。此外，这些方法通常依赖于化学物质，并且显然会限制大规模制备和超疏水材料的应用。这项研究报告了一种简单的基于聚丙烯（PP）溶液的工艺，该工艺可在商用铜网（低表面能材料）上生产PP分层结构，而无需修改低表面能材料。通过优化PP的浓度，可以合理地控制用PP改性的铜网的分层结构。所得铜网的接触角和滚落角分别为162°和7°。重要的是，在用3.5 wt％的NaCl溶液连续彻底冲洗过超疏水性铜网或用胶带反复撕裂超过30个循环后，没有观察到明显的性能下降，表明其良好的耐久性。用PP颗粒进行表面改性后，铜网具有出色的超疏水性和超亲油性。此外，准备好的铜网在变形为“微型船形”形状时可以在水面上自浮。同时，使用超疏水铜网形成的微型船实现了自驱式溢油的清除。微型船可以实现节能和高效率。该船的清理率高达97.1％，证明了其在环境修复应用中的巨大潜力。

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