干旱区生态环境知识资源中心(Arid): Superhydrophilic-Superhydrophobic Water Harvester Inspired by Wetting Property of Cactus Stem

Arid

DOI	10.1021/acssuschemeng.9b01113
	Superhydrophilic-Superhydrophobic Water Harvester Inspired by Wetting Property of Cactus Stem
	Lee, Sang Joon 1; Ha, Nami 1; Kim, Hyejeong 2
通讯作者	Lee, Sang Joon
来源期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN	2168-0485
出版年	2019
卷号	7 期号:12 页码:10561-+
英文摘要	Water harvesting is a core technology for collecting fresh water in arid areas. In this study, we design a three-dimensional cactus stem-inspired water harvesting system (WHS) with directional transport of absorbed fog. The bioinspired WHS consists of two distinct functions. One is an effective water-absorbing function with an antievaporating feature, and the other is an on-demand water-releasing function. The excellent water absorption capability of a mucilage-filled cactus stem covered with a cuticle is mimicked by a cylindrical double structural system (DS) comprising an interpenetrating polymer network (IPN) hydrogel with good water retention capacity and a superhydrophobic copper mesh (SHPM) that prevents the re-evaporation of absorbed water. DS harvests water at a rate of 209 mg cm(-2) h(-1) and exhibits enhanced water collecting performance, i.e., 1.2, 1.3, and 2 times higher than that of the superhydrophilic IPN hydrogel, SHPM, and pristine copper mesh (PTM), respectively. The detailed fog harvesting mechanism of DS is examined through an X-ray imaging technique, and the water harvesting mechanism is described in terms of volumetric expansion of IPN hydrogel, absorption of microdroplets on mesh humps, and thickness of the water-film between mesh fibers. In addition, the function of water release is demonstrated with the aid of the thermoresponsive property of the IPN hydrogel. This biomimetic WHS may aid in developing effective three-dimensional plant-inspired fog collectors.
英文关键词	Water harvesting Fog collection Cactus stem Interpenetrating polymer network hydrogel Mucilage
类型	Article
语种	英语
国家	South Korea ; Germany
收录类别	SCI-E
WOS记录号	WOS:000472240900044
WOS关键词	FOG ; COLLECTION ; CAPTURE ; RELEASE ; FIBERS
WOS类目	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213826
作者单位	1.Pohang Univ Sci & Technol POSTECH, Ctr Biofluid & Biomim Res, Dept Mech Engn, 77 Cheongam Ro, Pohang Si, Gyeongsangbuk D, South Korea; 2.Max Planck Inst Dynam & Self Org, Faissberg 17, D-37077 Gottingen, Germany
推荐引用方式 GB/T 7714	Lee, Sang Joon,Ha, Nami,Kim, Hyejeong. Superhydrophilic-Superhydrophobic Water Harvester Inspired by Wetting Property of Cactus Stem[J],2019,7(12):10561-+.
APA	Lee, Sang Joon,Ha, Nami,&Kim, Hyejeong.(2019).Superhydrophilic-Superhydrophobic Water Harvester Inspired by Wetting Property of Cactus Stem.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(12),10561-+.
MLA	Lee, Sang Joon,et al."Superhydrophilic-Superhydrophobic Water Harvester Inspired by Wetting Property of Cactus Stem".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.12(2019):10561-+.