Record Atmospheric Fresh Water Capture and Heat Transfer with a Material Operating at the Water Uptake Reversibility Limit
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acscentsci.7b00186.pdf
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Author(s)
Rieth, Adam Joseph
Yang, Sungwoo
Wang, Evelyn
Dinca, Mircea
Date Issued
May 2017
Journal
ACS Central Science
Publisher
American Chemical Society
Citation
Rieth, Adam J., et al. “Record Atmospheric Fresh Water Capture and Heat Transfer with a Material Operating at the Water Uptake Reversibility Limit.” ACS Central Science, vol. 3, no. 6, June 2017, pp. 668–72. © 2017 American Chemical Society
Version
Final published version
Abstract
The capture of water vapor at low relative humidity is desirable for producing potable water in desert regions and for heat transfer and storage. Here, we report a mesoporous metal–organic framework that captures 82% water by weight below 30% relative humidity. Under simulated desert conditions, the sorbent would deliver 0.82 g[subscript H2O]g[subscript MOF[superscript –1]], nearly double the quantity of fresh water compared to the previous best material. The material further demonstrates a cooling capacity of 400 kWh m[subscript –3] per cycle, also a record value for a sorbent capable of creating a 20 °C difference between ambient and output temperature. The water uptake in this sorbent is optimized: the pore diameter of our material is above the critical diameter for water capillary action, enabling water uptake at the limit of reversibility.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1021/acscentsci.7b00186
