Related Experiment Video
Updated: Dec 25, 2025
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Enhanced CO2 Electroreduction on Neighboring Zn/Co Monomers by Electronic Effect
Wenjin Zhu1, Lei Zhang1, Sihang Liu1
1Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Weijin Road 92, Tianjin, 300072, China.
Neighboring zinc/cobalt (Zn/Co) monomers on nitrogen-doped carbon effectively promote carbon dioxide electroreduction to carbon monoxide (CO). This electronic interaction enhances intermediate bonding, boosting CO production efficiency.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- Understanding monomer interactions is crucial for optimizing catalytic reactions.
- Neighboring effects can significantly alter reaction pathways and intermediate bonding.
Purpose of the Study:
- To elucidate the mechanism of electronic effects between neighboring Zn/Co monomers.
- To demonstrate the promotion of carbon dioxide electroreduction to CO by Zn/Co sites.
Main Methods:
- Synthesis of Zn and Co atoms coordinated on N-doped carbon (ZnCoNC).
- Electrochemical testing for CO faradaic efficiency and stability.
- Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) analysis.
- In situ attenuated total reflection-infrared spectroscopy (ATR-IR) and density functional theory (DFT) calculations.
Main Results:
- ZnCoNC achieved 93.2% CO faradaic efficiency at -0.5 V vs RHE over 30 hours.
- EXAFS confirmed no direct Zn-Co metal-metal bonds.
- XANES, ATR-IR, and DFT revealed electronic interactions between Zn and Co monomers.
- These electronic effects enhanced *COOH intermediate bonding on Zn sites, promoting CO production.
Conclusions:
- The electronic interplay between neighboring Zn and Co atoms is key to efficient CO2 electroreduction.
- This study provides a mechanistic understanding of monomer interactions in catalysis.
- The findings offer a pathway for designing advanced catalysts by controlling neighboring monomer effects.
More Related Videos
09:22Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
Published on: July 25, 2025
10:15Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
Published on: November 7, 2025
Related Concept Videos
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
02:51Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
02:42Valence Bond Theory
02:34Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
01:08Electrodeposition
Electrodeposition can...