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Scientists turn CO2 into fuel with solar power

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Scientists turn CO2 into fuel with solar power

Researchers at the University of Illinois at Chicago believe that they've perfected the art of photosynthetic solar cells. It's a technology that mimics a plant's ability to inhale carbon dioxide and, with water, convert it into glucose and oxygen. This system is capable of drawing in carbon dioxide and processing it into a synthetic fuel that could be used to power vehicles. Theoretically, this device could create a virtuous cycle where climate-altering carbon could be removed from the atmosphere and pumped back into cars.
The artificial leaf contains a pair of solar cells that power an infinitely more complex version of electrolysis. Energy from the sun is used to catalyse a reaction with various obscure compounds like nanoflake tungsten diselenide (which is a transition metal dichalcogenide). Synthetic gas comes out of the other side, which can either be used directly by vehicles that can take it, or converted further into diesel.
But this isn't the first time we've seen artificial photosynthesis being used as a potential weapon in the war on climate change. Early last year, we saw a team from Berkeley using a similar process, albeit with genetically-modified E. coli bacteria at the heart of the system. That version didn't output synthetic gas but acetate, a building block of several compounds like biofuel, anti-malaria drugs and biodegradable plastics.
Should UIC's newer process prove to be cost-effective, it could spell the end of traditional gasoline production as we know it. Instead, a network of these cells would be installed at a solar farm, creating fuel and reducing the quantity of atmospheric carbon dioxide at the same time. The only downside is that we'd still be re-releasing the deadly gas back into the atmosphere, but it's a decent stop-gap while we work on reducing our carbon emissions more permanently.

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