Fog collection serves as an efficient method to alleviate water scarcity in foggy, water-stressed regions. Recent research has focused on constructing a hybrid surface to enhance fog collection efficiency, with one approach being the prevention of liquid film formation at hydrophilic sites. Inspired by the desert beetle, a coating (10-MCC) made by partially acylating microcrystalline cellulose (MCC) exhibits hydrophilic sites alongside a hydrophobic skeleton enabling rapid droplet capture despite its overall hydrophobicity. The captured droplets quickly coalesce into a large droplet driven by the wetting gradient created by the hydrophobic backbone and hydrophilic sites. To achieve greater fog collection efficiency, a hydrophobic–superhydrophobic hybrid surface is formed by combining a coating of 10-MCC with a superhydrophobic surface. The construction of superhydrophobic surfaces typically involves creating a rough surface with a distinctive structure produced by the anodization technique and modifying it with stearic acid. The superhydrophobic surface exhibits excellent corrosion resistance and mechanical stability. Moreover, the hybrid surface shows high efficiency in fog collection, with a tested maximum efficiency of approximately 1.5092 g/cm²/h, 1.77 times that of the original Al sheets. The results demonstrate a remarkable enhancement in fog collection capacity. Furthermore, this work serves as an inspiration for the low-cost and innovative design of engineered surfaces for efficient fog collection.

中文翻译：

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使用酰化纤维素涂层改善混合表面的雾气收集


雾气收集是缓解多雾、缺水地区水资源短缺的有效方法。最近的研究重点是构建混合表面以提高雾收集效率，其中一种方法是防止在亲水位点形成液膜。受沙漠甲虫的启发，由部分酰化微晶纤维素 (MCC) 制成的涂层 (10-MCC) 在疏水性骨架旁边显示出亲水位点，尽管其整体具有疏水性，但仍能快速捕获液滴。捕获的液滴在疏水主链和亲水位点产生的润湿梯度的驱动下快速聚结成大液滴。为了实现更高的雾收集效率，通过将 10-MCC 涂层与超疏水表面相结合形成疏水-超疏水混合表面。超疏水表面的构造通常涉及通过阳极氧化技术创建具有独特结构的粗糙表面，并用硬脂酸对其进行改性。超疏水表面表现出优异的耐腐蚀性和机械稳定性。此外，混合表面具有很高的集雾效率，测试最高效率约为1.5092 g/cm ² /h，是原始Al片的1.77倍。结果表明雾收集能力显着增强。此外，这项工作为高效收集雾气的工程表面的低成本和创新设计提供了灵感。