Journal
ACS CATALYSIS
Volume 4, Issue 6, Pages 1637-1641Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs500298e
Keywords
artificial photosynthesis; cobalt; heterogeneous catalysis; Prussian blue; water oxidation
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Funding
- EU [COFUND 291787-ICIQ-IPMP]
- Spanish Ministerio de Economia y Competitividad [CTQ2012-34088]
- ICIQ Foundation
- EU (ERC Stg Grant CHEMCOMP)
- ICREA Funding Source: Custom
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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.
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