Light instead of electricity: A new kind of 'green hydrogen'

https://phys.org/news/2022-05-electricity-kind-green-hydrogen.html

"Tiny inorganic clusters... small number of atoms anchored on surface light-absorbing... titanium oxide... deposit clusters on titanium oxide, where they can act as catalysts for water splitting. Titanium oxide is sensitive to light... energy of the absorbed light leads to the creation of free-moving electrons and free-moving positive charges in the titanium oxide. These charges then allow the clusters of atoms sitting on this surface to facilitate the splitting of water into oxygen and hydrogen"