Dynamic interface catalysis and carbon dioxide reduction of liquid metals

Area of Science:

• Materials Science and Engineering
• Catalysis
• Nanotechnology

Background:

• Liquid metal (LM) catalysis shows promise in energy conversion and environmental catalysis due to its dynamic interface, tunable electronic structure, and regenerative active sites.
• Gallium-based LMs offer advantages over solid catalysts, including anti-poisoning, self-repairing interfaces, and dynamic reaction pathway regulation due to atomic mobility.

Purpose of the Study:

• To systematically review the fundamental characteristics and mechanisms of LM catalysis.
• To elucidate phase structure regulation for achieving low-temperature fluidity in LMs.
• To demonstrate precise control of catalytic sites through interfacial dynamics and external field regulation.

Main Methods:

• Exploration of phase structure regulation for low-temperature LM fluidity.
• Utilization of oxide film skin for dynamic interfacial tension gradient adaptation.
• Application of orbital coupling and external field regulation for precise control of catalytic sites.

Main Results:

• Demonstrated control over LM phase structure and interfacial properties for enhanced catalytic activity.
• Achieved precise control of catalytic sites via orbital coupling and external field manipulation.
• Showcased improved product selectivity in CO2 reduction reactions (CO2RR) using LM catalysts with dynamic coordination and self-healing capabilities.

Conclusions:

• LM catalysis presents significant potential for industrial applications, particularly in CO2RR, owing to its inherent advantages.
• Key challenges remain in antioxidant optimization, phase stability, and uniform dispersion of active sites.
• Future research should integrate multi-component alloy design, in situ characterization, and field regulation to advance LM catalysis.