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Related Experiment Video

Updated: Jul 27, 2025

Single-molecule Imaging of Gene Regulation In vivo Using Cotranslational Activation by Cleavage CoTrAC

Single-molecule Imaging of Gene Regulation In vivo Using Cotranslational Activation by Cleavage CoTrAC

Published on: March 15, 2013

Revealing CO

Jeongjin Kim^1,2, Youngseok Yu^3,4, Tae Won Go¹

¹Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.

Nature Communications

|June 6, 2023

Summary

This summary is machine-generated.

Copper nanocrystals facilitate carbon dioxide (CO2) activation. This study reveals how CO2 dissociation restructures copper, impacting CO2 conversion and catalyst design for renewable energy.

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Area of Science:

Materials Science
Surface Chemistry
Catalysis

Background:

Tailored copper (Cu) nanocrystals with vicinal planes are key for carbon dioxide (CO2) activation.
A direct link between CO2 conversion efficiency and the specific morphology of vicinal Cu interfaces remains unestablished.

Purpose of the Study:

To investigate the evolution of Cu nanocluster structures under CO2 exposure.
To establish a correlation between CO2 conversion and the morphological changes in Cu nanocrystals.

Main Methods:

Ambient pressure scanning tunneling microscopy (AP-STM) to observe nanocluster evolution on Cu(997) surfaces.
Synchrotron-based ambient pressure X-ray photoelectron spectroscopy (AP-XPS) to analyze chemical binding energies.

Main Results:

CO2 dissociation at Cu step-edges produces CO and O, inducing Cu atom restructuring.
CO binding leads to reversible Cu clustering, while O leads to irreversible Cu faceting.
AP-XPS confirmed CO-Cu complex formation, validating real-space observations.

Conclusions:

In situ observations offer realistic insights into Cu nanocatalyst behavior under CO2.
Understanding these restructuring processes is crucial for designing efficient Cu catalysts for CO2 conversion in C1 chemistry and renewable energy applications.