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

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Science  01 Dec 2017:
Vol. 358, Issue 6367, eaao0791
DOI: 10.1126/science.aao0791

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Kim et al. (Reports, 28 April 2017, p. 430) presented results for the solar-driven harvesting of water from air via metal-organic frameworks as a prodigious potential advance toward remedying global water shortages. Basic thermodynamics and a survey of multiple off-the-shelf technologies show that their approach is vastly inferior in efficiency (and thereby in feasibility) to available alternatives.

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