Journal
JOURNAL OF APPLIED ELECTROCHEMISTRY
Volume 33, Issue 12, Pages 1205-1210Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/B:JACH.0000003866.85015.b6
Keywords
boron-doped diamond; carbon dioxide reduction; ruthenium dioxide
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Study of carbon dioxide reduction at RuO2-coated diamond electrodes showed that conductive metallic oxides are promising electrocatalysts for this process and allow higher reduction products to be obtained. The main reduction products obtained in acidic and neutral media were formic acid and methanol, with product efficiencies as high as 40 and 7.7%, respectively. It was observed that conductive diamond is a very well suited material for studying the electrocatalytic properties of conductive metallic oxides, because its use resulted in a negligible substrate effect. This feature will greatly enhance the ability to understand the relationships between the intrinsic electrochemical behavior and the electrocatalytic behavior, in view of developing new effective electrocatalysts. The use of conductive diamond could also allow better utilization of the electrocatalyst by avoiding the need for thick films.
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