Journal
CHEMISTRYSELECT
Volume 1, Issue 19, Pages 6055-6061Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201601169
Keywords
catalyst; carbon dioxide; CO2; ethanol; reduction
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Though carbon dioxide is a waste product of combustion, it can also be a potential feedstock for the production of fine and commodity organic chemicals provided that an efficient means to convert it to useful organic synthons can be developed. Herein we report a common element, nanostructured catalyst for the direct electrochemical conversion of CO2 to ethanol with high Faradaic efficiency (63% at 1.2 V vs RHE) and high selectivity (84%) that operates in water and at ambient temperature and pressure. Lacking noble metals or other rare or expensive materials, the catalyst is comprised of Cu nanoparticles on a highly textured, N-doped carbon nanospike film. Electro-chemical analysis and density functional theory (DFT) calculations suggest a preliminary mechanism in which active sites on the Cu nanoparticles and the carbon nanospikes work in tandem to control the electrochemical reduction of carbon monoxide dimer to alcohol.
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