Researchers have made a standalone device that can convert sunlight, CO2 and water into formic acid and oxygen. The new device contains novel photocatalysts embedded in a sheet made of semiconductor powders, which can be made easily and cheaply. It produces formic acid, a liquid that can be stored and transported easily, and later used directly as a fuel or converted into hydrogen.
Source: Wang, Q., Warnan, J., Rodríguez-Jiménez, S. et al. Molecularly engineered photocatalyst sheet for scalable solar formate production from carbon dioxide and water. Nat Energy (2020).
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