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Friday, June 14, 2013

Chasing the holy grail in water splitting

Kazuhiko Maeda (from Tokyo Institute of Technology) explains well in his recent review that a Z-scheme photocatalyst system can make dreams come true: producing hydrogen and oxygen gases from water by sunlight. Combining a H2 evolution photocatalyst with an O2 evolving one is known for sometime as the key for ultimate artificial photosynthesis. Although hopeful developments exist (as also elaborated in this 15-page-long-and-strong article), I don't feel much optimistic about this photocatalytic water splitting in general. A cold-fusion-like fate is certainly not out of sight. We have to be careful

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