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Electrocatalytic CO2 reduction at low overpotentials using iron(III) tetra(meso-thienyl)porphyrins

preprint
revised on 15.03.2019 and posted on 15.03.2019 by Josh D. B. Koenig, Janina Willkomm, Roland Roesler, Warren Piers, Gregory C. Welch

The optical and electrochemical properties, as well as the CO2 reduction capability of two different iron(III) thienyl-porphyrins, iron(III) tetra(meso-thien-2-yl)porphyrin (FeTThP) and iron(III) tetra(meso-5-methylthien-2-yl)porphyrin (FeTThMeP), are directly compared to those of iron(III) tetra(meso-phenyl)porphyrin (FeTPP). Through exploitation of mesomeric stabilization effects, FeTThP and FeTThMeP both reduced CO2 to CO with comparable faradaic efficiencies and TONCO relative to FeTPP, with an overpotential 150 mV lower than the benchmark catalyst.

History

Email Address of Submitting Author

wpiers@ucalgary.ca

Institution

University of Calgary

Country

Canada

ORCID For Submitting Author

0000-0003-2278-1269

Declaration of Conflict of Interest

There are no conflicts of interest

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