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Hydrogel and sunlight can desalinate water

13.04.2018

The nanostructured hydrogel was developed by American materials scientists. With it, you can desalinate and purify water by evaporating it using solar energy. The corresponding material uses up to 94 percent of the total energy value of the sunlight falling on it, and therefore allows you to get up to 23 liters per day from one square meter of surface.

One of the most promising ways to purify and desalinate water, of course, is the method of evaporating water using solar energy. With this method, sunlight is initially absorbed by a submerged solar steam generator, which leads to evaporation.

It is usually proposed to use nanoparticles capable of absorbing sunlight or nanostructured materials with a large surface area as the main material of the generator. The currently existing prototypes of solar steam generators, according to scientists, are extremely inefficient in exploiting the energy of sunlight to evaporate water, so at the moment their practical application is not justified.

In order to solve this problem, American materials scientists, led by a specialist from Texas, proposed using nanoconstructive hydrogel as the material for a solar steam generator. The material obtained by scientists not only contains an extremely complex system of pores, consisting of wide millimeter cavities, but is also capable of absorbing almost all sunlight in the visible and infrared regions of the spectrum.

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