Recent progress on sorption/desorption-based atmospheric water harvesting powered by solar energy

With the advantages of high efficiency, clean and renewable energy, the technology of sorption/desorption-based atmospheric water harvesting powered by solar energy has gradually attracted the increasing attention of researchers. In this review paper, through analyzing and summarizing the principles, the performance indexes, the measurements of parameters, the material types, the morphology modification, and the system design and devices of this technology, it was found that the existing research mainly focused on adsorbents, while there are still some imperfections, such as limited application circumstances, instability, discontinuous working and long cycle. Accordingly, the direction of future research is expected to redesign adsorbent materials for higher adsorptiondesorption rate and wider range of applications, add heat accumulator and air-driving equipment to make system controllable and flexible, miniaturize devices for convenient utilization, and optimize systems to shorten the water collection cycle and to achieve rapid and continuous working. To follow the direction above, there are also some suggestions for adsorbents and system design.

Automated summary

Future research direction includes redesigning adsorbent materials, adding heat accumulators and air-driving equipment, miniaturizing devices, and optimizing systems to achieve more efficient water harvesting technology.