Light-Driven Water Oxidation with Metal Hexacyanometallate Heterogeneous Catalysts

The catalytic activity of metal hexacyanometallates (Prussian blue-type coordination polymers) was tested in photoactivated water oxidation by [Ru­(2-2′-bpy)3]2+/persulfate system at pH close to neutrality. This screening shows that manganese and cobalt N-coordinated compounds are able to catalyze t...

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Bibliographic Details
Published in:ACS catalysis 2014-06, Vol.4 (6), p.1637-1641
Main Authors: Goberna-Ferrón, Sara, Hernández, Willinton Y, Rodríguez-García, Barbara, Galán-Mascarós, José Ramón
Format: Article
Language:English
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Summary:The catalytic activity of metal hexacyanometallates (Prussian blue-type coordination polymers) was tested in photoactivated water oxidation by [Ru­(2-2′-bpy)3]2+/persulfate system at pH close to neutrality. This screening shows that manganese and cobalt N-coordinated compounds are able to catalyze the oxygen evolution reaction. Mn hexacyanometalates show low activity. Co hexacyanometalates, in contrast, appear highly active and promote robust catalysis with excellent quantum yield (≤88%), even in acidic media. Our results indicate that these catalysts are viable candidates for a photoactivated water oxidation process as part of an artificial photosynthesis scheme.
ISSN:2155-5435
2155-5435
DOI:10.1021/cs500298e