University of Cambridge scientists have developed an 'artificial leaf' that, powered by sunlight, converts CO2 and water into ethanol and propanol. This innovation eliminates the intermediary step of producing syngas, making the technology more practical and paving the way for a sustainable, zero-ca
A standalone artificial leaf attached to a metal rod support. The photoanode side is visible in the photograph. Credit: Motiar Rahaman
Unlike fossil fuels, these solar fuels produce net zero carbon emissions and completely renewable, and unlike most bioethanol, they do not divert any agricultural land away from food production. Now, the artificial leaf can directly produce clean ethanol and propanol without the need for the intermediary step of producing syngas.
“Shining sunlight on the artificial leaves and getting liquid fuel from carbon dioxide and water is an amazing bit of chemistry,” said Dr Motiar Rahaman, the paper’s first author. “Normally, when you try to convert COinto another chemical product using an artificial leaf device, you almost always get carbon monoxide or syngas, but here, we’ve been able to produce a practical liquid fuel just using the power of the Sun. It’s an exciting advance that opens up whole new avenues in our work.
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