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Operando Surface Chemistry on Bimetallic Catalysts for CO2 Hydrogenation
Yuhwan Jeon1, Yeji Yoon1, Si Woo Lee1
1Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea.
Nano Letters
|April 24, 2026
Summary
Operando surface science studies reveal how bimetallic catalyst surfaces change during CO2 hydrogenation. Understanding these dynamic changes is key to designing efficient catalysts for sustainable carbon dioxide conversion.
Area of Science:
- Catalysis and Surface Science
- Materials Science
- Sustainable Chemistry
Background:
- Catalyst surface evolution under reaction conditions is crucial for CO2 hydrogenation technologies.
- Bimetallic catalysts offer tunable properties for enhanced activity and selectivity.
Purpose of the Study:
- To review recent operando surface science studies on bimetallic catalysts for CO2 hydrogenation.
- To highlight the influence of dynamic restructuring, redox processes, and interfacial effects on catalyst performance.
Main Methods:
- In situ scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), X-ray absorption spectroscopy (XAS), and transmission electron microscopy (TEM) were employed.
- Studies covered single-crystal alloys, 2D model systems, and supported powders.
- Theoretical approaches were integrated with experimental data.
Main Results:
- Operando techniques visualize atomistic surface changes during reactions.
- Dynamic restructuring, redox processes, and interfacial effects significantly impact catalyst activity and selectivity.
- Integration with theory provides insights into active sites and reaction pathways.
Conclusions:
- Operando surface analysis is a powerful framework for understanding catalyst behavior.
- This approach guides the rational design of bimetallic catalysts for sustainable CO2 conversion.
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