Water harvesting method via a hybrid superwettable coating with superhydrophobic and superhydrophilic nanoparticles
Water harvesting method via a hybrid superwettable coating with superhydrophobic and superhydrophilic nanoparticles
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通过具有超疏水和超亲水纳米粒子的混合超润湿涂层的集水方法
DOI：
10.1016/j.apsusc.2018.09.210
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发表时间：
2019-01
影响因子：
6.7
通讯作者：
Zhang Youfa
中科院分区：
文献类型：
--
作者：
Wang Xikui;Zeng Jia;Yu Xinquan;Liang Caihua;Zhang Youfa
在半干旱沙漠和内陆地区，收集大气水越来越受到关注。这项研究提出了一种新的仿生方法，其灵感来自于纳米布沙漠甲虫疏水-亲水表面的雾气收集能力。它设想以低成本制备（通过紫外线照射对二氧化钛进行光催化）二氧化钛-二氧化硅杂化超润湿表面，结合超疏水和超亲水纳米粒子，并表现出优异的水/雾收集性能。对产品样品的表面润湿性、凝结性能、水收集率和润湿稳定性进行了详细研究。获得的结果强烈表明，通过无掩模光催化制备的混合超润湿表面增强了水滴冷凝和水收集特性，具有非常稳定的润湿性。实验确定了紫外线照射时间为200s时最佳的集水和除滴效率。这项工作结果被认为有助于进一步设计和实施混合超疏水-超亲水表面，以实现经济高效的大气水收集。
Water collection gains increasing attention for harvesting atmospheric water in semi-arid deserts and inland areas. A new biomimetic method, inspired by the fog harvesting ability of hydrophobic-hydrophilic surfaces of Namib desert beetles, is presented in this study. It envisages a low-cost preparation (by the photocatalysis of titanium dioxide through ultraviolet irradiation) of a titanium dioxide-silicon dioxide hybrid superwettable surface combining superhydrophobic and superhydrophilic nanoparticles and exhibiting excellent water/fog collection properties. The surface wettability, condensation properties, water collection rate, and wetting stability of the product samples are investigated in detail. The results obtained strongly indicate that the proposed hybrid superwettable surface prepared by maskless photocatalysis enhances the water drop condensation and water collection characteristics, with very stable wettability. The best water collection and drop removal efficiency was experimentally determined at the ultraviolet irradiation time of 200 s. This work findings are considered instrumental in the further design and implementation of hybrid superhydrophobic-superhydrophilic surfaces for cost-efficient atmospheric water harvesting.
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影响因子：
19
作者：
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通讯作者：
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