Solar reduction of water. II. Inhibition of the hydrogenation of methyl viologen in the system water-Tris(2,2'-bipyridine)ruthenium(II) dication-ethylenediaminetetraacetic acid-platinum by sulfur compounds

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Abstract
The light-induced formation of hydrogen in the system H2O-Ru(bpy)32+-mv2+-edta-Pt is accompanied by the hydrogenation of mv2+. This hydrogenation process is suppressed by the addition of cysteine or glutathione. Substantial increases in the turnover numbers of mv2+ and the yields and rates of hydrogen production are achieved.