Journal
SCIENCE
Volume 356, Issue 6336, Pages 430-432Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aam8743
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Funding
- ARPA-E HEATS (Advanced Research Projects Agency-Energy, High Energy Advanced Thermal Storage program) [DE-AR0000185]
- Samsung scholarship
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Atmospheric water is a resource equivalent to similar to 10% of all fresh water in lakes on Earth. However, an efficient process for capturing and delivering water from air, especially at low humidity levels (down to 20%), has not been developed. We report the design and demonstration of a device based on a porous metal-organic framework {MOF-801, [Zr6O4(OH)(4)(fumarate)(6)]} that captures water from the atmosphere at ambient conditions by using low-grade heat from natural sunlight at a flux of less than 1 sun (1 kilowatt per square meter). This device is capable of harvesting 2.8 liters of water per kilogram of MOF daily at relative humidity levels as low as 20% and requires no additional input of energy.
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