Isolated FeN4 Sites for Efficient Electrocatalytic CO2 Reduction

Xiaogang Li; Shibo Xi; Libo Sun; Shuo Dou; Zhenfeng Huang; Tan Su; Xin Wang

doi:10.1002/advs.202001545

Isolated FeN₄ Sites for Efficient Electrocatalytic CO₂ Reduction

Xiaogang Li
, Shibo Xi
, Libo Sun
, Shuo Dou
, Zhenfeng Huang
, Tan Su
, Xin Wang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

144 Citations (Scopus)

34 Downloads (CityUHK Scholars)

Abstract

The construction of isolated metal sites represents a promising approach for electrocatalyst design toward the efficient electrochemical conversion of carbon dioxide (CO₂). Herein, Fe-doped graphitic carbon nitride is rationally prepared by a simple adsorption method and is used as template to construct isolated FeN₄sites through a confined pyrolysis strategy, which avoids the agglomeration of metal atoms to particles during the synthesis process and thus provides abundant active sites for the CO₂ reduction reaction. The isolated FeN₄ sites lower the energy barrier for the key intermediate in the CO₂ reduction process, leading to the enhanced selectivity for CO production with a faradaic efficiency of up to 93%. © 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Article number	2001545
Journal	Advanced Science
Volume	7
Issue number	17
Online published	12 Jul 2020
DOIs	https://doi.org/10.1002/advs.202001545
Publication status	Published - 9 Sept 2020
Externally published	Yes

Funding

This work was supported by the National Research Foundation (NRF), Prime Minister's Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) program. The authors also acknowledge financial support from, the academic research fund AcRF tier 1 (M4012076 RG118/18), Ministry of Education, Singapore, and AME Individual Research Grant (Grant number: A1983c0026), Agency for Science, Technology, and Research (A*STAR).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Research Keywords

CO2 reduction
confined pyrolysis
electrocatalysis
isolated active sites

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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10.1002/advs.202001545

143110250.pdfFinal Published version, 2.22 MBLicence: CC BY

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Cite this

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abstract = "The construction of isolated metal sites represents a promising approach for electrocatalyst design toward the efficient electrochemical conversion of carbon dioxide (CO2). Herein, Fe-doped graphitic carbon nitride is rationally prepared by a simple adsorption method and is used as template to construct isolated FeN4 sites through a confined pyrolysis strategy, which avoids the agglomeration of metal atoms to particles during the synthesis process and thus provides abundant active sites for the CO2 reduction reaction. The isolated FeN4 sites lower the energy barrier for the key intermediate in the CO2 reduction process, leading to the enhanced selectivity for CO production with a faradaic efficiency of up to 93\%. {\textcopyright} 2020 The Authors. Published by WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

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T1 - Isolated FeN4 Sites for Efficient Electrocatalytic CO2 Reduction

AU - Li, Xiaogang

AU - Xi, Shibo

AU - Sun, Libo

AU - Dou, Shuo

AU - Huang, Zhenfeng

AU - Su, Tan

AU - Wang, Xin

PY - 2020/9/9

Y1 - 2020/9/9

N2 - The construction of isolated metal sites represents a promising approach for electrocatalyst design toward the efficient electrochemical conversion of carbon dioxide (CO2). Herein, Fe-doped graphitic carbon nitride is rationally prepared by a simple adsorption method and is used as template to construct isolated FeN4 sites through a confined pyrolysis strategy, which avoids the agglomeration of metal atoms to particles during the synthesis process and thus provides abundant active sites for the CO2 reduction reaction. The isolated FeN4 sites lower the energy barrier for the key intermediate in the CO2 reduction process, leading to the enhanced selectivity for CO production with a faradaic efficiency of up to 93%. © 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - The construction of isolated metal sites represents a promising approach for electrocatalyst design toward the efficient electrochemical conversion of carbon dioxide (CO2). Herein, Fe-doped graphitic carbon nitride is rationally prepared by a simple adsorption method and is used as template to construct isolated FeN4 sites through a confined pyrolysis strategy, which avoids the agglomeration of metal atoms to particles during the synthesis process and thus provides abundant active sites for the CO2 reduction reaction. The isolated FeN4 sites lower the energy barrier for the key intermediate in the CO2 reduction process, leading to the enhanced selectivity for CO production with a faradaic efficiency of up to 93%. © 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - CO2 reduction

KW - confined pyrolysis

KW - electrocatalysis

KW - isolated active sites

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DO - 10.1002/advs.202001545

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