Russian scientists have created a new material for the production of hydrogen from dirty and salt water
Researchers have developed a new two-dimensional material to produce hydrogen even from salt and dirty water when exposed to sunlight.
Hydrogen is a promising source of renewable energy, so scientists continue to look for more efficient and cleaner ways to get it. One of the main methods is the decomposition of water by sunlight. The problem is that, despite the huge reserve on the Zamla, most of it is salty or polluted. Today, only a few solutions are suitable for such water.
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Now scientists from Tomsk Polytechnic University together with colleagues from the Prague Higher School of Chemical Technology and the University. Jan Evangelista Purkinė in Usti nad Labem created a three-layer material that uses infrared light to break down water.
Its thickness is only 1 micron. The bottom layer consists of a thin gold film, in the center there is a platinum layer 10 nm thick, and on top there is an organometallic framework made of a combination of chromium with organic molecules, which also acts as a filter, which allows it to be effectively used in polluted and salty environments.
Upon contact of the material with water and under the action of infrared light, electrons are formed on the gold sheet, which, moving through the platinum layer to the catalytic centers at the boundary of the organometallic framework, initiate the reduction of protons and the release of hydrogen.
During the experiments, a 10×10 cm square made of new material produced 0.5 liters of H2 per hour, which is one of the best indicators for today. In the future, the team plans to increase its efficiency through the visible spectrum and achieve the use of 93% of the spectral volume of sunlight.
As a reminder, researchers have recently found a way to store hydrogen in solid form at room temperature.
, Tomsk Polytechnic University, alicdn