Jump to main content
Jump to site search


Cobalt-porphine Catalyzed CO2 Electro-reduction: A Novel Protonation Mechanism

Abstract

Urgent needs for artificially fixing CO2 call for catalysts of high efficiency, the transition metal functionalized porphyrin (TMP) is one of the most important kinds of organic catalysts for CO2 reduction. However, the catalytic mechanisms of TMP in CO2 reduction still remain controversial. Starting from the previously neglected catalyst self-protonation model, we uncover a new CO2 reduction mechanism on cobalt-porphine, which involves an indirect proton transferred step happening at the beginning of the reduction cycle. Based on this protonation mechanism, we demonstrate the different producing rate-pH correlations for the formation of CO and methane, in good agreement with available experimental observations. Our results reveal how pH and potential affect the CO2 reduction process, providing important clues and insights for further optimization of TMP catalysts.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 24 Mar 2017, accepted on 15 May 2017 and first published on 15 May 2017


Article type: Paper
DOI: 10.1039/C7CP01881A
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
  •   Request permissions

    Cobalt-porphine Catalyzed CO2 Electro-reduction: A Novel Protonation Mechanism

    C. Yao, J. C. Li, G. Wang and Q. Jiang, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP01881A

Search articles by author