Abstract
Adsorption-based passive solar air water collection devices have great potential for delivering potable water to arid or desert regions of the world. Here, we synthesized the hygroscopic salt-modified UiO-66 composite adsorbents by impregnation method. In the open adsorption test, LiCl particles have high water adsorption and a large contact area with water vapor, which enhances the water adsorption performance of the composite adsorbents. Furthermore, in the regeneration temperature test, LiCl/UiO-66 showed the performance of low regeneration temperature. The hydrothermal stability of LiCl/UiO-66 was confirmed by cycle tests. The experimental results show that the solar air water collection device based on LiCl/UiO-66 composite adsorbents is a promising method to solve the problem of water shortage in arid areas.
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