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Related Experiment Video

Updated: Dec 7, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Engineering Atomically Dispersed FeN₄ Active Sites for CO₂ Electroreduction.

Nadia Mohd Adli¹, Weitao Shan², Sooyeon Hwang³

¹Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.

Angewandte Chemie (International Ed. in English)

|October 1, 2020

Summary

This study reveals how catalyst particle size, iron content, and iron-nitrogen bond structure influence the electrochemical carbon dioxide reduction reaction (CO2RR). Optimizing these factors enhances catalytic performance for CO2RR to CO.

Keywords:

CO2 reduction Fe-N-C catalysts electrocatalysis local strain single-metal sites

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Area of Science:

Electrochemistry
Materials Science
Catalysis

Background:

Atomically dispersed FeN4 active sites show promise for electrochemical CO2 reduction reaction (CO2RR) to CO.
Understanding the intrinsic and morphological factors governing FeN4 site catalytic properties is crucial but limited.

Purpose of the Study:

To deconvolute and elucidate the impacts of key morphological and structural elements on FeN4 sites for CO2RR.
To investigate the roles of particle size, Fe content, and Fe-N bond structure in catalytic performance.

Main Methods:

Utilized a Fe-N-C model catalyst derived from ZIF-8.
Comprehensively elucidated the impacts of particle size, Fe content, and Fe-N bond structure on CO2RR.
Examined the structural evolution of Fe-N bonds at the atomic level.
Employed first-principles calculations to understand intrinsic activity origins.

Main Results:

Engineering particle size and Fe doping are critical for optimizing porosity, electrochemically active surface areas, and carbon support graphitization.
Intrinsic activity is tunable by varying thermal activation temperatures, affecting Fe-N bond length and local strains.
Optimal local strain in Fe-N bonds was identified as a key factor for improved intrinsic activity.

Conclusions:

Both extrinsic morphological factors (particle size, Fe content) and intrinsic factors (Fe-N bond structure, local strain) significantly influence FeN4 site performance in CO2RR.
Atomic-level understanding of structural evolution and the role of local strain provides insights for designing highly efficient CO2RR electrocatalysts.