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Rapid Cycling and Exceptional Yield in a Metal-Organic Framework Water Harvester

Journal Article · · ACS Central Science
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  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy NanoSciences Inst., Berkeley, CA (United States); Berkeley Global Science Inst., Berkeley, CA (United States)
  2. Univ. of South Alabama, Mobile, AL (United States)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy NanoSciences Inst., Berkeley, CA (United States); Berkeley Global Science Inst., Berkeley, CA (United States); King Abdulaziz City for Science and Technology (KACST), Riyadh (Saudi Arabia)
Sorbent-assisted water harvesting from air represents an attractive way to address water scarcity in arid climates. Hitherto, sorbents developed for this technology have exclusively been designed to perform one water harvesting cycle (WHC) per day, but the productivities attained with this approach cannot reasonably meet the rising demand for drinking water. This work shows that a microporous aluminum-based metal-organic framework, MOF-303, can perform an adsorption-desorption cycle within minutes under a mild temperature swing, which opens the way for high-productivity water harvesting through rapid, continuous WHCs. Additionally, the favorable dynamic water sorption properties of MOF-303 allow it to outperform other commercial sorbents displaying excellent steady-state characteristics under similar experimental conditions. Finally, these findings are implemented in a new water harvester capable of generating 1.3 L kgMOF-1 day-1 in an indoor arid environment (32% relative humidity, 27 °C) and 0.7 L kgMOF-1 day-1 in the Mojave Desert (in conditions as extreme as 10% RH, 27 °C), representing an improvement by 1 order of magnitude over previously reported devices. This study demonstrates that creating sorbents capable of rapid water sorption dynamics, rather than merely focusing on high water capacities, is crucial to reach water production on a scale matching human consumption.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1591817
Journal Information:
ACS Central Science, Journal Name: ACS Central Science Journal Issue: 10 Vol. 5; ISSN 2374-7943
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Simulation Meets Experiment: Unraveling the Properties of Water in Metal–Organic Frameworks through Vibrational Spectroscopy journal May 2021
Porous Crystals Provide Potable Water from Air journal September 2019
Reversible Atmospheric Water Harvesting Using Metal-Organic Frameworks journal January 2020
Energy performance and climate dependency of technologies for fresh water production from atmospheric water vapour journal January 2020
The Chemistry of Reticular Framework Nanoparticles: MOF, ZIF, and COF Materials journal February 2020
Highly Efficient Clean Water Production from Contaminated Air with a Wide Humidity Range journal December 2019
Efficient Solar‐Driven Water Harvesting from Arid Air with Metal–Organic Frameworks Modified by Hygroscopic Salt journal February 2020
Efficient Solar‐Driven Water Harvesting from Arid Air with Metal–Organic Frameworks Modified by Hygroscopic Salt journal March 2020

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