Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/96544
Title: | Salting-in effect of zwitterionic polymer hydrogel facilitates atmospheric water harvesting | Authors: | Aleid, S Wu, M Li, R Wang, W Zhang, C Zhang, L Wang, P |
Issue Date: | 7-Mar-2022 | Source: | ACS materials letters, 7 Mar. 2022, v. 4, no. 3, p. 511-520 | Abstract: | Hygroscopic salt-hydrogel composite sorbents have attracted increasing attention for atmospheric water harvesting (AWH) applications but suffer from the salting-out effect. To this end, this work, for the first time, discovers that the salting-in effect possessed by a zwitterionic hydrogel is able to facilitate water vapor sorption by the hygroscopic salt under otherwise the same conditions. For demonstration, zwitterionic hydrogel of poly-[2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (PDMAPS) was synthesized, and the hygroscopic salt of LiCl was embedded into PDMAPS to produce the salt-hydrogel composite. LiCl salt not only endows the sorbent with high water vapor sorption capacity but also facilitates the dissociation of self-association between cationic and anionic groups of PDMAPS. This salting-in effect was evaluated and confirmed experimentally and via density functional theory (DFT) calculation. The salting-in effect renders the zwitterionic hydrogel matrix with enhanced swelling capacity, leading to the sorbent's high AWH performance. With a photothermal component of CNT integrated into the sorbent, a fully solar energy-driven AWH process was demonstrated outdoors. This study provides important guidance to the design of hydrogel-based AWH sorbents. | Publisher: | American Chemical Society | Journal: | ACS materials letters | EISSN: | 2639-4979 | DOI: | 10.1021/acsmaterialslett.1c00723 | Rights: | © 2022 The Authors. Published by American Chemical Society This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) The following publication Aleid, S., Wu, M., Li, R., Wang, W., Zhang, C., Zhang, L., & Wang, P. (2022). Salting-in effect of zwitterionic polymer hydrogel facilitates atmospheric water harvesting. ACS Materials Letters, 4(3), 511-520 is available at https://doi.org/10.1021/acsmaterialslett.1c00723. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
acsmaterialslett.1c00723.pdf | 7.13 MB | Adobe PDF | View/Open |
Page views
73
Last Week
3
3
Last month
Citations as of Apr 28, 2024
Downloads
65
Citations as of Apr 28, 2024
SCOPUSTM
Citations
88
Citations as of Apr 26, 2024
WEB OF SCIENCETM
Citations
78
Citations as of May 2, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.