Proton-coupled electron transfer in the electrocatalysis of CO2 reduction: prediction of sequential vs. concerted pathways using DFT† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc02984a Click here for additional data file.

نویسندگان

  • Adrien J. Göttle
  • Marc T. M. Koper
چکیده

1399) Topology of the potential energy surface (PES) along the PT and ET reaction coordinates (q p and q e) predicted by the theory with no solvent overlap (q e and q p orthogonal,) and at the condition pH = pK a (AH) and E applied = E CPET = E ET. The solvent overlap ̅ í µí¼† = 0 quantifies the coupling between the solvent modes along the PT and ET reaction coordinates. The SPET is kinetically favoured over CPET because the activation energy of the CPET (, cf ref above) is always larger than for the individual steps ET () and PT ().

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Rapid water oxidation electrocatalysis by a ruthenium complex of the tripodal ligand tris(2-pyridyl)phosphine oxide† †Electronic supplementary information (ESI) available: Synthetic procedures and characterization data, electrochemical characterization, and crystallographic details. CCDC 1034644. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc00032g Click here for additional data file. Click here for additional data file.

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Proton-coupled electron transfer in the electrocatalysis of CO2 reduction: prediction of sequential vs. concerted pathways using DFT.

Herein we investigate computationally in detail the mechanism of the formation of the carboxylate adduct during the electroreduction of CO2 in water catalysed by cobalt porphyrin complexes. Specifically, we address qualitatively the competition between the concerted and sequential pathways for the proton-coupled electron transfer. We use a simple methodology for accurate computation of the pKa ...

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عنوان ژورنال:

دوره 8  شماره 

صفحات  -

تاریخ انتشار 2017