Floating Artificial Leaf Turns CO2 Into Fuel

A new artificial leaf is light enough to float on water, where it can soak up sunlight and carbon dioxide from air, and use the water below to produce fuels. Researchers at Cambridge University tested their 100-square-centimeter artificial-leaf device outdoors on a river. Depending on the catalyst used, the device either splits water to produce hydrogen fuel, or converts carbon dioxide into syngas, a mix of carbon monoxide and hydrogen that is used to make other fuels like methanol. Fleets of such devices could be deployed on brackish water ponds, canals, and on seas, so as not to compete with land use, they say.

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