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Efficient water oxidation at carbon nanotube–polyoxometalate electrocatalytic interfaces
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Efficient water oxidation at carbon nanotube–polyoxometalate electrocatalytic interfaces
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Journal Article
Efficient water oxidation at carbon nanotube–polyoxometalate electrocatalytic interfaces
2010
Overview
Water is the renewable, bulk chemical that nature uses to enable carbohydrate production from carbon dioxide. The dream goal of energy research is to transpose this incredibly efficient process and make an artificial device whereby the catalytic splitting of water is finalized to give a continuous production of oxygen and hydrogen. Success in this task would guarantee the generation of hydrogen as a carbon-free fuel to satisfy our energy demands at no environmental cost. Here we show that very efficient and stable nanostructured, oxygen-evolving anodes are obtained by the assembly of an oxygen-evolving polyoxometalate cluster (a totally inorganic ruthenium catalyst) with a conducting bed of multiwalled carbon nanotubes. Our bioinspired electrode addresses the one major challenge of artificial photosynthesis, namely efficient water oxidation, which brings us closer to being able to power the planet with carbon-free fuels.
Catalytically oxidizing water to produce oxygen is so challenging that even the enzyme that performs the task in nature must be regenerated every 30 mins. Now, stable oxygen-evolving anodes have been made by tethering a polyoxometalate catalyst to a conducting bed of carbon nanotubes.
