English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Superhydrophilic-superhydrophobic water harvester inspired by wetting property of cactus stem

Lee, S. J., Ha, N., & Kim, H. (2019). Superhydrophilic-superhydrophobic water harvester inspired by wetting property of cactus stem. ACS Sustainable Chemistry and Engineering, 7(12), 10561-10569. doi:10.1021/acssuschemeng.9b01113.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0003-F23E-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-F23F-6
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Lee, S. J., Author
Ha, N., Author
Kim, Hyejeong1, Author              
Affiliations:
1Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063287              

Content

show
hide
Free keywords: Water harvesting; Fog collection; Cactus stem; Interpenetrating polymer network hydrogel; Mucilage
 Abstract: 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.

Details

show
hide
Language(s): eng - English
 Dates: 2019-05-162019-06-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/acssuschemeng.9b01113
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: ACS Sustainable Chemistry and Engineering
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 7 (12) Sequence Number: - Start / End Page: 10561 - 10569 Identifier: -