Technical Comments

Comment on “Water harvesting from air with metal-organic frameworks powered by natural sunlight”

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Science  24 Nov 2017:
Vol. 358, Issue 6366, eaao0361
DOI: 10.1126/science.aao0361

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Kim et al. (Reports, 28 April 2017, p. 430) describe a method for harvesting water from air, using a metal-organic framework (MOF) as the adsorbent. The process as described in the paper is, however, inadequate, and the system cannot deliver the claimed amount of liquid water in an arid climate. A modification of the process design and the use of more suitable MOFs may be more likely to achieve the goals targeted by Kim et al.

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