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Magnus Haugaard Rønne

Enhanced Catalytic Activity of Cobalt Porphyrin in CO2 Electroreduction upon Immobilization on Carbon Materials

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Enhanced Catalytic Activity of Cobalt Porphyrin in CO2 Electroreduction upon Immobilization on Carbon Materials. / Hu, Xinming; Ronne, Magnus H.; Pedersen, Steen U.; Skrydstrup, Troels; Daasbjerg, Kim.

In: Angewandte Chemie International Edition, Vol. 56, No. 23, 01.06.2017, p. 6468-6472.

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@article{fa5b5eb37df5428a9ed75e2546b85c5f,
title = "Enhanced Catalytic Activity of Cobalt Porphyrin in CO2 Electroreduction upon Immobilization on Carbon Materials",
abstract = "In a comparative study of the electrocatalytic CO2 reduction, cobalt meso-tetraphenylporphyrin (CoTPP) is used as a model molecular catalyst under both homogeneous and heterogeneous conditions. In the former case, employing N,N-dimethylformamide as solvent, CoTPP performs poorly as an electrocatalyst giving low product selectivity in a slow reaction at a high overpotential. However, upon straightforward immobilization of CoTPP onto carbon nanotubes, a remarkable enhancement of the electrocatalytic abilities is seen with CO2 becoming selectively reduced to CO (>90{\%}) at a low overpotential in aqueous medium. This effect is ascribed to the particular environment created by the aqueous medium at the catalytic site of the immobilized catalyst that facilitates the adsorption and further reaction of CO2. This work highlights the significance of assessing an immobilized molecular catalyst from more than homogeneous measurements alone.",
keywords = "CO2 conversion, electrocatalysis, heterogeneous catalyst, immobilization, molecular catalyst, ELECTROCHEMICAL REDUCTION, ELECTROCATALYTIC REDUCTION, HOMOGENEOUS CATALYSIS, CO2-TO-CO CONVERSION, ORGANIC FRAMEWORKS, AQUEOUS-SOLUTION, DIOXIDE, ELECTRODES, COMPLEXES, WATER",
author = "Xinming Hu and Ronne, {Magnus H.} and Pedersen, {Steen U.} and Troels Skrydstrup and Kim Daasbjerg",
year = "2017",
month = "6",
day = "1",
doi = "10.1002/anie.201701104",
language = "English",
volume = "56",
pages = "6468--6472",
journal = "Angewandte Chemie International Edition",
issn = "1433-7851",
publisher = "Wiley-VCH",
number = "23",

}

RIS

TY - JOUR

T1 - Enhanced Catalytic Activity of Cobalt Porphyrin in CO2 Electroreduction upon Immobilization on Carbon Materials

AU - Hu, Xinming

AU - Ronne, Magnus H.

AU - Pedersen, Steen U.

AU - Skrydstrup, Troels

AU - Daasbjerg, Kim

PY - 2017/6/1

Y1 - 2017/6/1

N2 - In a comparative study of the electrocatalytic CO2 reduction, cobalt meso-tetraphenylporphyrin (CoTPP) is used as a model molecular catalyst under both homogeneous and heterogeneous conditions. In the former case, employing N,N-dimethylformamide as solvent, CoTPP performs poorly as an electrocatalyst giving low product selectivity in a slow reaction at a high overpotential. However, upon straightforward immobilization of CoTPP onto carbon nanotubes, a remarkable enhancement of the electrocatalytic abilities is seen with CO2 becoming selectively reduced to CO (>90%) at a low overpotential in aqueous medium. This effect is ascribed to the particular environment created by the aqueous medium at the catalytic site of the immobilized catalyst that facilitates the adsorption and further reaction of CO2. This work highlights the significance of assessing an immobilized molecular catalyst from more than homogeneous measurements alone.

AB - In a comparative study of the electrocatalytic CO2 reduction, cobalt meso-tetraphenylporphyrin (CoTPP) is used as a model molecular catalyst under both homogeneous and heterogeneous conditions. In the former case, employing N,N-dimethylformamide as solvent, CoTPP performs poorly as an electrocatalyst giving low product selectivity in a slow reaction at a high overpotential. However, upon straightforward immobilization of CoTPP onto carbon nanotubes, a remarkable enhancement of the electrocatalytic abilities is seen with CO2 becoming selectively reduced to CO (>90%) at a low overpotential in aqueous medium. This effect is ascribed to the particular environment created by the aqueous medium at the catalytic site of the immobilized catalyst that facilitates the adsorption and further reaction of CO2. This work highlights the significance of assessing an immobilized molecular catalyst from more than homogeneous measurements alone.

KW - CO2 conversion

KW - electrocatalysis

KW - heterogeneous catalyst

KW - immobilization

KW - molecular catalyst

KW - ELECTROCHEMICAL REDUCTION

KW - ELECTROCATALYTIC REDUCTION

KW - HOMOGENEOUS CATALYSIS

KW - CO2-TO-CO CONVERSION

KW - ORGANIC FRAMEWORKS

KW - AQUEOUS-SOLUTION

KW - DIOXIDE

KW - ELECTRODES

KW - COMPLEXES

KW - WATER

U2 - 10.1002/anie.201701104

DO - 10.1002/anie.201701104

M3 - Journal article

C2 - 28466962

VL - 56

SP - 6468

EP - 6472

JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

SN - 1433-7851

IS - 23

ER -