Production of hydrogen with solar light

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The Nanoengineering of Materials Applied to Energy (NEMEN UPC) group has developed a photocatalyst that can produce hydrogen with solar light from contaminated water. The photocatalyst, which contains a titanium oxide semiconductor and small clusters of metals, has been developed through the Single-Atom Catalysts for Hydrogen Photogeneration (CMIRA) cooperation project, together with IRCELYON.


This technology enables us to obtain hydrogen in a renewable way with solar light at a low cost, as the process takes place in environmental conditions. The technology has been tested at pilot scale using solar concentrators. Its use has been studied in residential buildings in which the hydrogen that is generated can be mixed with the natural gas that fuels hot water and heating boilers, to reduce the consumption of natural gas and cut atmospheric emissions. In addition to the development of the photocatalyst, the NEMEN group has designed a photoreactor with microchannels for this application.



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