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Highly ordered mesoporous carbon/iron porphyrin nanoreactor for the electrochemical reduction of CO2.
- Source :
- Journal of Materials Chemistry A; 8/14/2020, Vol. 8 Issue 30, p14966-14974, 9p
- Publication Year :
- 2020
-
Abstract
- A variety of carbon materials such as carbon nanotubes and graphene have been widely investigated as conductive substrates to immobilize metal complex-based catalysts for electrocatalytic CO<subscript>2</subscript> reduction. However, highly ordered mesoporous carbons have received scant attention as substrates for CO<subscript>2</subscript> reduction electrocatalysts. The unique porous structure of such carbon provides the opportunity to not only house catalytically active materials but also facilitate reactant transport. In this work, we propose a simple approach for immobilization of the highly active and cost-efficient molecular catalyst iron porphyrin, into a highly ordered mesoporous carbon, CMK-3 having a large surface area of 1345 m<superscript>2</superscript> g<superscript>−1</superscript>via a simple vacuum infiltration method. The resulting heterogeneous electrocatalyst (CMK-FeTPP) is utilized for the conversion of aqueous CO<subscript>2</subscript> into CO with 92.1% faradaic efficiency and a high effective turnover frequency of 3.9 s<superscript>−1</superscript> at an overpotential of 680 mV. We believe that this new approach has the potential to be widely used to fabricate efficient electrocatalysts for not only CO<subscript>2</subscript> conversion but also other electrochemical gas conversion systems. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 8
- Issue :
- 30
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 144917039
- Full Text :
- https://doi.org/10.1039/d0ta04641h