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An Iron Quaterpyridine Complex as Precursor for the Electrocatalytic Reduction of CO2 to Methane
Claudio Cometto1, Lingjing Chen2, Daniela Mendoza1,3
1Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRS, Université de Paris, 75013, Paris, France.
Abstract:
A Fe quaterpyridine complex was used as a molecular precursor for the electrochemical reduction of CO2 to CH4 in acetonitrile in the presence of triethanolamine. CH4 was produced with a faradaic yield of approximately 2.1 % at 25 °C and 1 atm pressure of CO2 as reactant. Controlled potential electrolysis coupled to ex situ X-ray photoelectron spectroscopy and X-ray absorption spectroscopy of the electrode surface revealed the formation of metallic iron covered by iron oxides as species responsible for catalysis.
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