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@article{Sarma:2023:10.1016/j.electacta.2023.142855,
author = {Sarma, SC and Barrio, J and Gong, M and Pedersen, A and Kucernak, A and Titirici, M and Stephens, IEL},
doi = {10.1016/j.electacta.2023.142855},
journal = {Electrochimica Acta},
title = {Atomically dispersed Fe in a C2N-derived matrix for the reduction of CO2 to CO},
url = {http://dx.doi.org/10.1016/j.electacta.2023.142855},
volume = {463},
year = {2023}
}

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TY  - JOUR
AB  - Carbon-supported single metal atoms coordinated to nitrogen have recently emerged as efficient electrocatalysts for the electrochemical CO2 reduction reaction (CO2RR) to CO; although the presence of aggregated metallic species can decrease Faradaic efficiency, catalyst utilization and promote the hydrogen evolution reaction. In this work, we employ our recent synthetic protocol for producing single and dual Fe atoms in a high surface area C2N-derived nitrogen-doped carbon and test the catalysts for CO2 reduction. The higher resolution of the X-ray absorption spectroscopy that we employed herein, relative to our previous report, allowed us to more accurately pinpoint the dominant site as pentacoordinated Fe single atoms. The material displays high active site utilization of 25.1 ± 1.2% (based on in situ nitrite stripping experiments). Additionally, a Faradaic efficiency of 98% for the CO2RR to CO was obtained, with a turnover frequency of 2.5 e− site−1 s−1, at -0.56 V vs a reversible hydrogen electrode (RHE); on par with state-of-the-art Au catalysts.
AU  - Sarma,SC
AU  - Barrio,J
AU  - Gong,M
AU  - Pedersen,A
AU  - Kucernak,A
AU  - Titirici,M
AU  - Stephens,IEL
DO  - 10.1016/j.electacta.2023.142855
PY  - 2023///
SN  - 0013-4686
TI  - Atomically dispersed Fe in a C2N-derived matrix for the reduction of CO2 to CO
T2  - Electrochimica Acta
UR  - http://dx.doi.org/10.1016/j.electacta.2023.142855
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001043748900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.sciencedirect.com/science/article/pii/S0013468623010319
UR  - http://hdl.handle.net/10044/1/108609
VL  - 463
ER  -

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