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Spatial Separation of Molecular Conformers and Clusters

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Published on: January 9, 2014

Clustering-Evolved Frontier Orbital for Low-Temperature CO₂ Dissociation.

Jinliang Pan¹, Xiu-E Li^2,3, Yifan Zhu¹

¹BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.

Journal of the American Chemical Society

|August 22, 2023

Summary

Single Nickel-2 clusters on copper oxide demonstrate high activity for low-temperature carbon dioxide dissociation. This breakthrough advances single-cluster catalysis for efficient CO2 activation.

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Published on: August 1, 2017

Area of Science:

Heterogeneous catalysis
Surface science
Materials chemistry

Background:

Carbon dioxide (CO2) activation is crucial for climate change mitigation and sustainable chemical synthesis.
Previous studies show limited success with single nickel atoms or metallic nickel for CO2 dissociation.
Understanding the role of specific cluster structures is key to developing efficient catalysts.

Purpose of the Study:

To synthesize and characterize single Ni2 clusters on monolayered CuO.
To investigate the catalytic activity of Ni2 clusters for low-temperature CO2 thermal dissociation.
To elucidate the underlying mechanism of CO2 activation by Ni2 clusters using theoretical calculations.

Main Methods:

Synthesis of single Ni2 clusters on monolayered CuO.
Experimental characterization of the synthesized clusters.
Density functional theory (DFT) calculations to study electronic structure and reaction mechanisms.

Main Results:

Successfully synthesized single Ni2 clusters on monolayered CuO.
Ni2 clusters exhibited remarkable activity for low-temperature CO2 thermal dissociation.
Cationic Ni atoms showed non-dissociative CO2 adsorption, while metallic Ni was inert.
DFT revealed Ni2 clusters alter orbital symmetry to facilitate CO2 activation.

Conclusions:

Single Ni2 clusters are highly active catalysts for low-temperature CO2 dissociation.
The unique electronic structure of Ni2 clusters enables efficient CO2 activation.
This work opens new avenues for single-cluster catalysis and CO2 utilization.