Abstract
A new system containing Ru (bpy)3Cl2 and (Et4N)2 [Fe4S4 (SBzl)4] as a photocatalyst and a relay compound, respectively, was developed for hydrogen production from water by visible light irradiation. Studies on the effect of donors on the system clearly showed that EDTA was the most efficient among those investigated, and the hydrogen formation yields reached over 20000% with respect to both the photosensitizer and the iron-sulfur cluster. An interesting feature of the present system is the successful use of a ferredoxin model compound as a catalytic electron carrier.
