Simple Photosystem II Water Oxidation Centre Analogues in Visible Light Oxygen and H+ Generation



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Calcium manganese oxide nanoparticles for application in water oxidation are synthesized by combination with a carboxylated biopolymer stabilizing agent to form very simple but effective analogues of the photosynthetic PSII oxygen evolving complex. The relative efficiency of these materials for production of O2 and protons under visible light-promoted reactions is evaluated and prolonged reaction lifetimes are observed.