Scalable magnesium gallate MOF captures 170 mg water/ gram of material at a low 0.2% relative humidity, desorbing using low-grade heat

https://www.eurekalert.org/news-releases/1130680

"ultramicroporous channels/ hydrogen bonding trap moisture at microscopic scale... maintained structural integrity after sitting in water 28 days/ 20 continuous extraction cycles... if deployed as active, automated appliance rather than passive solar still, small amount of electrical energy powers: low-power fans to steadily push dry air through the MOF beds to speed up the passive capture phase, and condenser cooling plates or small fans to cool the released hot vapor back down into liquid water."