Carbon dioxide reduction is an essential component of many prospective technologies for the renewable synthesis of carbon-containing fuels. Known catalysts for this reaction generally suffer from low energetic efficiency, poor product selectivity, and rapid deactivation. We show that the reduction of thick Au oxide films results in the formation of Au nanoparticles ("oxide-derived Au") that exhibit highly selective CO2 reduction to CO in water at overpotentials as low as 140 mV and retain their activity for at least 8 h. Under identical conditions, polycrystalline Au electrodes and several other nano-structured Au electrodes prepared via alternative methods require at least 200 mV of additional overpotential to attain comparable CO2 reduction activity and rapidly lose their activity. Electrokinetic studies indicate that the improved catalysis is linked to dramatically increased stabilization of the CO2 center dot- intermediate on the surfaces of the oxide-derived Au electrodes.
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Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Columbia Univ, Lenfest Ctr Sustainable Energy, New York, NY 10027 USA
DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Graves, Christopher
Ebbesen, Sune D.
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DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Ebbesen, Sune D.
Mogensen, Mogens
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DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Mogensen, Mogens
Lackner, Klaus S.
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Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Columbia Univ, Lenfest Ctr Sustainable Energy, New York, NY 10027 USAColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
机构:
Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Columbia Univ, Lenfest Ctr Sustainable Energy, New York, NY 10027 USA
DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Graves, Christopher
Ebbesen, Sune D.
论文数: 0引用数: 0
h-index: 0
机构:
DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Ebbesen, Sune D.
Mogensen, Mogens
论文数: 0引用数: 0
h-index: 0
机构:
DTU, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, DenmarkColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Mogensen, Mogens
Lackner, Klaus S.
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA
Columbia Univ, Lenfest Ctr Sustainable Energy, New York, NY 10027 USAColumbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA