Bismuth Based Catalyst for Selective Production of CO from CO2

Rosenthal_June2013Professor Joel Rosenthal, in the Department of Chemistry and Biochemistry, has recently reported in the Journal of the American Chemical Society that bismuth modified glassy-carbon electrodes are excellent electrocatalysts for the electroreduction of carbon dioxide into carbon monoxide. Bismuth is a widely available metal the byproduct of the production of lead, copper and tin. In the JACS report, Rosenthal shows that Bi-modified carbon electrodes (see figure on left) are effective and selective devices for the conversion of CO2 to CO on a variety of solvents, but are especially effective in imidazonium-based ionic liquids. Low over-potentials and Faradaic efficiencies of nearly 95% yield excellent energy efficiency for CO production, comparable to what has been observed using expensive catalysts like silver or gold.

 

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