Polyethylenimine-Enhanced Electrocatalytic Reduction of CO2 to Formate at Nitrogen-Doped Carbon Nanomaterials

Nitrogen-doped carbon nanotubes are selective and robust electrocatalysts for CO2 reduction to formate in aqueous media without the use of a metal catalyst. Polyethylenimine (PEI) functions as a co-catalyst by significantly reducing catalytic overpotential and increasing current density and efficien...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2014-06, Vol.136 (22), p.7845-7848
Main Authors: Zhang, Sheng, Kang, Peng, Ubnoske, Stephen, Brennaman, M. Kyle, Song, Na, House, Ralph L, Glass, Jeffrey T, Meyer, Thomas J
Format: Article
Language:English
Online Access:Get full text
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Summary:Nitrogen-doped carbon nanotubes are selective and robust electrocatalysts for CO2 reduction to formate in aqueous media without the use of a metal catalyst. Polyethylenimine (PEI) functions as a co-catalyst by significantly reducing catalytic overpotential and increasing current density and efficiency. The co-catalysis appears to help in stabilizing the singly reduced intermediate CO2 •– and concentrating CO2 in the PEI overlayer.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja5031529