From Sciencedaily. Photosynthesis involves the use of light energy to oxidize water, and reduce carbon dioxide, thus forming sugars, and releasing oxygen. Scientists looking for new ways to produce hydrogen as a fuel source from renewable sources, report that an inorganic metal cluster can oxidize water to hydrogen and oxygen. This process of artificial photosynthesis uses a rare transition metal. Problem solved? Not quite:
Botar explains the next step: "Now the challenge is to integrate this ruthenium complex into photoactive systems, which efficiently convert solar energy into chemical energy". So far, energy is still obtained from a chemical oxidant.
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