Efficient photoproduction of H2 from water in the presence of electron donors such as ethylenediaminetetra-acetic acid or triethanolamine and a colloidal Pt-redox catalyst, sensitized by proflavine, is reported; this is a two-component redox system for H2 production as against the common three-component systems with an electron acceptor.
K. Kalyanasundaram and M. Grätzel, J. Chem. Soc., Chem. Commun., 1979, 1137 DOI: 10.1039/C39790001137
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