Related Experiment Video
Updated: Jan 8, 2026
10:57
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
18.9K
Spin-Polarization in Rigid/Soft Layered Oxide Catalyst Regulates Key Intermediates for Efficient CO2-to-Formate
Yangyang Zhang1,2, Genqiang Zhang2, Qiangqiang Song3
1School of Materials Science and Engineering, Anhui University, Hefei, Anhui, 230601, China.
Angewandte Chemie (International Ed. in English)
|December 17, 2025
Summary
This study introduces a novel CuInAlO4 catalyst for efficient carbon dioxide electroreduction to formate. The catalyst
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Precise control of metal oxidation states is crucial for CO2 electroreduction.
- Stabilizing intermediates like *OCHO is key to enhancing formate yield.
- Current methods face challenges in intermediate adsorption-desorption.
Purpose of the Study:
- To synthesize a novel rigid/soft layered oxide catalyst (CuInAlO4) for CO2 electroreduction.
- To investigate the role of spin-polarized electron transfer and spin-orbit coupling in enhancing formate production.
- To improve formate selectivity and efficiency by optimizing intermediate adsorption-desorption.
Main Methods:
- Synthesis of rigid/soft layered oxides (CuInAlO4).
- Experimental and theoretical analyses (including DFT) to study electronic structure and reaction mechanisms.
- Electrochemical measurements to evaluate catalytic performance (faradaic efficiency, overpotential, energy efficiency).
Main Results:
- CuInAlO4 exhibits enhanced spin polarization and spin-orbit coupling via a Cu-O-In superexchange interaction.
- A unique In─*O─CH─O*─Cu electronic bridge facilitates formate formation.
- Achieved 95% faradaic efficiency for formate at 500 mA cm⁻², with 80.3% energy efficiency and 180 mV overpotential.
- Reduced the *OCHO-to-HCOOH energy barrier by 1.31 eV compared to conventional pathways.
- Rigid AlO5 units prevent oxygen dissolution and stabilize metal-oxygen bonds.
Conclusions:
- The CuInAlO4 catalyst effectively controls metal oxidation states and stabilizes the *OCHO intermediate.
- Spin-polarized charge transfer and spin-orbit coupling are critical for high formate selectivity and production rates.
- The catalyst design offers a promising strategy for efficient CO2 electroreduction to valuable chemicals.
Related Concept Videos
02:50Catalysis
30.0K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
30.0K
01:17Thermal Electrocyclic Reactions: Stereochemistry
2.5K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.5K
01:16Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
3.1K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
3.1K
02:57Sharpless Epoxidation
4.9K
The conversion of allylic alcohols into epoxides using the chiral catalyst was discovered by K. Barry Sharpless and is known as Sharpless epoxidation. The use of a chiral catalyst enables the formation of one enantiomer of the product in excess. This chiral catalyst is mainly a chiral complex of titanium tetraisopropoxide and tartrate ester (specific stereoisomer). The stereoisomer used in the chiral catalyst dictates the formation of the enantiomer of the product. In other words, the use of...
4.9K
02:44Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
12.5K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
12.5K
01:33Regioselective Formation of Enolates
3.3K
As depicted in the figure below, the unsymmetrical ketones can form two possible enolates: less substituted or more substituted enolates. Usually, the thermodynamic enolates are formed from the more substituted α-carbon atom, while the kinetic enolates are formed faster by deprotonation from the less substituted position. The thermodynamic enolates have lower energy, so they are more stable. But the energy required to form kinetic enolates is less.
3.3K