A novel hygroscopic salt-modified MOF-303 with efficient solar-driven water harvesting from arid air

at low relative humidity (25 °C, 30% RH) and high adsorption kinetics (adsorption saturated at 80 min). By adding a certain proportion of the photothermal material CB, MOF-303@LiCl could be heated up to 66.1 °C under one solar irradiation, achieving desorption within 60 min. The adsorption-desorption cycle of this composite adsorbent can be powered by natural sunlight without the need for optical focusing and additional energy input. The fast adsorption-desorption kinetics allow for multiple cycles of AWH in a single day, which has great potential in water harvesting.