# Water harvesting from air with metal-organic frameworks powered by natural sunlight

“Water harvesting from air with metal-organic frameworks powered by natural sunlight” (2017), by Hyunho Kim et al. Energy research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Hyunho Kim, Sungwoo Yang, Sameer  Raghavendra Rao, Shankar Narayanan, Eugene A. Kapustin, Hiroyasu Furukawa, Ari S. Umans, Omar M. Yaghi, Evelyn N. Wang
- Published: April 13, 2017
- Field: Energy
- DOI: https://doi.org/10.1126/science.aam8743
- Source: https://doi.org/10.1126/science.aam8743

## Abstract

Solar heat helps harvest humidity Atmospheric humidity and droplets constitute a huge freshwater resource, especially at the low relative humidity (RH) levels typical of arid environments. Water can be adsorbed by microporous materials such as zeolites, but often, making these materials release the water requires too much energy to be practical. Kim et al. used a metal-organic framework (MOF) material that has a steep increase in water uptake over a narrow RH range to harvest water, using only ambient sunlight to heat the material. They obtained 2.8 liters of water per kilogram of MOF daily at 20% RH. Science , this issue p. 430

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