Date: 3 months ago   Category: Studies

Scientists have created the windows capable to extract "green" fuel from air - RIA Novosti, 6/14/2017


The scheme of operation of the new catalyst capable to extract water from air and to decompose it to hydrogen and oxygen
MOSCOW, 14 Jun – RIA Novosti. Physicists and chemists from Australia have developed the unusual catalyst from which films can "exhaust" water vapors from air and decompose them to hydrogen and oxygen, it is told in article published in the ACS Nano magazine. "Today most of scientists has concentrated the efforts on creation of the systems and catalysts splitting water in the liquid state. Similar approach imposes a lot of restrictions and prevents depreciation of hydrogen and increase in efficiency of catalysts. Many of these problems can be solved, decomposing water vapors, but not her molecules in solutions and electrolytes" — Torben Daeneke from RMIT university in Melbourne (Australia) has declared. In recent years physicists have created a set of splitters of water which decompose water molecules to oxygen and hydrogen by means of light or electric current most of which successful versions only come to commercial profitability. Besides, similar catalysts in most cases either collapse, or become soiled when splitting water that forces scientists to develop not free techniques of their regeneration. © Photo: University of Illinois at Chicago/Jenny Fontainefiziki have created the solar batteries transforming CO2 in a toplivodeneka and its colleagues have found a way to solve both of these problems, experimenting with unusual catalysts on the basis of compounds of molybdenum and sulfur. These substances as scientists tell, their colleagues already for a long time try to adapt for splitting of liquid water by means of light, however nobody studied so far how they behave on air. Studying properties of sulfide of molybdenum, scientists have noticed that this substance well incorporates water vapors from air which somewhere completely disappeared subsequently. Having tracked processes in crystals and molecules of this catalyst, authors of article have found that they can attach to themselves water molecules, "tear off" from them oxygen and emit pure hydrogen and oxygen at radiation with light. Speed of similar extraction of water and its splitting can be increased considerably if to apply molybdenum sulfide nanoparticles on a transparent and flat surface, such as glass. Being guided by this idea, scientists have turned this catalyst into translucent "paint" for windows, having mixed it with titanium dioxide nanoparticles. © Photo: Ornluchenye have created the nanomaterial producing alcohol from vozdukhapodobny coverings as note physics, can produce hydrogen in any conditions and in any place on Earth where the Sun shines and air contains at least the minimum share of water vapors. Overall performance of similar of "fuel windows" can be improved, having replaced nanoparticles of the titan with particles of silicon or other semiconductors better absorbing light, or having placed catalyst molecules in the three-dimensional lattice which is well passing star radiation. Besides production of renewable fuel, the vozd can apply similar paints and other materials on the basis of sulfide of molybdenum to creation of highly sensitive sensors of humidity and systems of drainage

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