Technical Details
Researchers at the University of Iowa have proposed an unusual method for extracting water from the atmosphere. Typically, porous absorbents are used in special conditions, often energy-intensive. The new method involves a sunlight-activated crystalline structure sensitive to ultraviolet radiation.
Context and Background
Generally, researchers used a class of materials known as metal-organic frameworks (MOFs). These materials consist of metal atoms at the vertices of a lattice, connected by organic molecules. This allows for the creation of materials with huge internal voids, flexibly customizable for specific molecules.
Industry Impact
Such properties enable the production of 'smart' sorbents that do not simply passively absorb moisture but are activated by sunlight. In laboratory conditions, the material retained about 5% water relative to its mass, which is still a bit low compared to the best MOF systems for water collection. However, the experiment proved the concept, which will allow for further development of the material and achievement of better characteristics.