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Liquid Fuels from Sunshine

Safi Bello

Scientific American ------ The notion of an artificial leaf makes so much sense. Leaves, of course, harness energy from the sun to turn carbon dioxide into the carbohydrates that power a plant’s cellular activities. For decades, scientists have been working to devise a process similar to photosynthesis to generate a fuel that could be stored for later. This could solve a major challenge of solar and wind power—providing a way to stow the energy when the sun is not shining and the air is still. Many, many investigators have contributed over the years to the development of a form of artificial photosynthesis in which sunlight-activated catalysts split water molecules to yield oxygen and hydrogen—the latter being a valuable chemical for a wide range of sustainable technologies. A step closer to actual photosynthesis would be to employ this hydrogen in a reduction reaction that converts CO2 into hydrocarbons. Like a real leaf, this system would use only CO2, water and sunlight to produce fuels. The achievement could be revolutionary, enabling creation of a closed system in which carbon dioxide emitted by combustion was transformed back into fuel instead of adding to the greenhouse gases in the atmosphere. To learn more click on the picture below to read the article.

Liquid Fuels from Sunshine - Read More from Scientific American

 
 
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