Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 37, Pages 13064-13067Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201603068
Keywords
molecular catalysts; nanostructures; photoelectrochemistry; silicon; solar fuels
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Funding
- US National Science Foundation [DMR-1055762, CHE-1352437]
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In the presence of a molecular Co-II catalyst, CO2 reduction occurred at much less negative potentials on Si photoelectrodes than on an Au electrode. The addition of 1% H2O significantly improved the performance of the CoII catalyst. Photovoltages of 580 and 320 mV were obtained on Si nanowires and a planar Si photoelectrode, respectively. This difference likely originated from the fact that the multifaceted Si nanowires are better in light harvesting and charge transfer than the planar Si surface.
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