仿纳米布沙漠甲壳虫的绿色环保型水收集材料

受纳米布沙漠甲壳虫水收集机制的启发，开发超亲水-超疏水相间的图案化绿色环保型仿生水收集材料。以大自然中的荷叶为Cassie超疏水基底，利用有机溶剂环己烷溶液预润湿超疏水荷叶的方法，将二氧化钛纳米颗粒和良性胶的混合物黏附在其表面上构建超亲水位点。研究了超亲水位点的数量对水收集效率的影响及最佳水收集效率，并具体分析了水雾收集过程。结果表明:当样品的超亲水面积占比为4.2%（9个超亲水位点），此仿生水收集材料具有最佳的水收集效率为（28.02 ± 0.1） mg·min^-1·cm^-2。该方法成功制备绿色环保型仿生水收集材料，为解决全球水资源短缺问题提供了新的思路，有望大范围应用于现实生产中。

Eco-Friendly Water-Collecting Materials Inspired by Namib Desert Beetles

Inspired by the fog harvesting mechanism of the Namib Desert Beetle， environment-friendly bioinspired water-collecting material with superhydrophilic-superhydrophobic patterned was developed. The lotus leaf as the Cassie superhydrophobic substrate was prewetted with the organic solvent cyclohexane， and the mixtures of titanium dioxide nanoparticles with benign glue were adhered to its surface to construct superhydrophilic sites. The effects of superhydrophilic sites numbers on the water collection rate and the maximum were investigated， and the water collection process was analyzed in detail. The results show that the bioinspired fog harvesting material has the best water collection rate of （28.02 ± 0.1） mg·min^-1·cm^-2 when the percentage of superhydrophilic area of the sample is 4.2% （9 superhydrophilic sites）. By this method， environment-friendly bioinspired water collection materials have been successfully prepared which provides a new idea for solving the global water shortage problem.