Enhanced Electrochemical Reduction of CO2 Catalyzed by Cobalt and Iron Amino Porphyrin Complexes

Maryam Abdinejad, Ali Seifitokaldani, Caitlin Dao, Edward H. Sargent*, Xiao An Zhang, Heinz Bernhard Kraatz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Metallo-porphyrin complexes such as cobalt and iron porphyrins (CoP and FeP) have shown potential as electrocatalysts for CO2 reduction. Here we report that introducing amino substituents enhances the electrocatalytic activity of these systems toward CO2 reduction through a dual active site approach. We developed a flexible synthesis of Co- and Fe-porphyrins having variable amino groups and found that monoamino FeP reduces CO2 to carbon monoxide (CO) at ambient pressure and temperature with competitive turnover numbers (TONs). This efficiency enhancement approach opens a new path to designing and optimizing next generation homogeneous catalysts.

Original languageEnglish (US)
Pages (from-to)1330-1335
Number of pages6
JournalACS Applied Energy Materials
Volume2
Issue number2
DOIs
StatePublished - Feb 25 2019

Keywords

  • amino porphyrins
  • carbon dioxide capturing
  • carbon dioxide reduction
  • cobalt porphyrin
  • homogeneous electrocatalysts
  • iron porphyrin

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

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