Related Experiment Video
Updated: Jul 1, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Simultaneously Engineering the First and Second Coordination Shells of Single Iron Catalysts for Enhanced Oxygen
Kai Chi1, Zhuoping Wang1, Tao Sun2
1Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Department of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
This study introduces a new method to enhance isolated iron-nitrogen-sulfur (Fe-N-S) catalysts for renewable energy. The optimized Fe-N3S1 active sites show superior oxygen reduction reaction activity and stability in zinc-air batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Atomically dispersed Fe-N4 active sites are promising for renewable energy conversion.
- Optimizing the local atomic microenvironment of Fe atoms can further boost catalytic efficiency.
Purpose of the Study:
- To develop a novel strategy for regulating the coordination shells of Fe-N4 isolated atoms.
- To enhance oxygen reduction reaction (ORR) activity and stability of single-atom catalysts.
Main Methods:
- A salt-template polymerization method was used to adjust the first (Fe-N3S1) and second (C-S-C) coordination shells.
- Theoretical studies were performed to understand charge redistribution and d-band center effects.
- A single Fe atom electrocatalyst (Fe-SAc/NSG) was designed and synthesized using nitrogen and sulfur co-doped graphene.
Main Results:
- The Fe-N3S1-S active moiety was successfully incorporated into nitrogen, sulfur co-doped graphene.
- Theoretical calculations indicated that the strategy lowers the metal site's d-band center, weakening oxygenated intermediate binding.
- The synthesized Fe-SAc/NSG catalyst demonstrated excellent alkaline ORR activity, surpassing Pt/C and other Fe-SAc catalysts.
- The catalyst exhibited superior stability in zinc-air batteries.
Conclusions:
- Localized regulation of atomic structure, specifically the coordination shells, is an effective approach to create highly active single metal atom catalysts.
- The developed Fe-SAc/NSG catalyst shows significant potential for applications in renewable energy conversion, particularly in zinc-air batteries.
More Related Videos
08:40Synthesis 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
09:02Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Related Concept Videos
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Catalysis
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Introduction to Mechanisms of Enzyme Catalysis
Phase I Oxidative Reactions: Overview