期刊
LANGMUIR
卷 38, 期 8, 页码 2720-2728出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.1c03488
关键词
-
资金
- Bill & Melinda Gates Foundation [INV-009181]
- Innovation Grant of Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP)
- National Natural Science Foundation of China [62134009, 62121005]
- Jilin Provincial Science and Technology Development Project [YDZJ202102CXJD002]
- Chinese Academy of Sciences President's International Fellowship Initiative [2022VSB0002]
This study uses femtosecond lasers to create micro-nanostructures on aluminum alloy substrates as molds for imprinting on polypropylene materials. The resulting superhydrophobic surfaces exhibit excellent rain collection efficiency, especially in arid areas, with potential for more than 100% improvement compared to flat surfaces.
Freshwater is considered an essential need for humanity. Moreover, it is important to collect and make full use of rainwater. This work utilizes a femtosecond laser to fabricate micro-nanostructures on aluminum alloy substrates as molds. Then, the structures are imprinted on cheap and wildly used polypropylene (PP) materials. The just-imprinted PP surfaces with instinctive surface energy and replicated micro-nanostructures have an excellent superhydrophobic property with contact angles greater than 160 degrees and anisotropic sliding angles smaller than 5 degrees in parallel directions and smaller than 10 degrees in the vertical directions. A small-scale rain collection device formed by a combination of the superhydrophobic PP surfaces is used to investigate the effects of the rain collection efficiency and total surface area relating to manufacturing cost. The rain collection device formed by the imprinted PP surfaces has high rain collection efficiency in terms of the volume of the collected water per square centimeter. For the light rain, the rain collection efficiency can reach an approximated maximum of 90%, more than 100% efficiency improvement of the device formed by flat PP surfaces in some cases. Therefore, the rain collection device is helpful in collecting water from rains in arid areas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据