[In situ FTIRS studies of CO2 reduction on thin film alloy electrodes].
The nanometer thin film alloy electrode (Sb-Pb-Pt/GC) was prepared by electrochemical methods. Excellent catalytic effect was observed on these film alloy material in the electro-reduction of carbon dioxide (CO2). The reduction can take place at potentials as high as -0.4 V. The oxidation of reduced products of CO2 on Sb-Pb-Pt/GC yielded current peaks at arrowed -0.08, 0.2 and 0.3 V, while the oxidation of reduction products on a nm-Pt/GC electrode gave rise a current peak near 0.4 V. The in situ FTIR spectroscopic studies confirmed at a molecule level that the products of CO2 reduction on Sb-Pb-Pt/GC are mainly organic acid and alcoholic compounds, while on a nm-Pt/GC electrode the production of CO2 is mainly CO species.
Chen
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State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, 361005 Xiamen.
Xia
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Sun
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D000497:Alloys / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D002248:Carbon Monoxide / Q000032:analysis; D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D036103:Nanotechnology; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*; D012238:Rhodium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods
D000497:Alloys; D002245:Carbon Dioxide; D010984:Platinum; D002248:Carbon Monoxide; D012238:Rhodium