Controllable Conversion of CO₂ on Non-Metallic Gold Clusters

Area of Science:

• Catalysis
• Nanomaterials Science
• Surface Chemistry

Background:

• Gold nanoparticles are established catalysts, but their non-metallic catalytic behavior is underexplored.
• Atomically precise gold clusters (Au_n) represent a unique bridge between non-metallic and metallic catalytic states.

Purpose of the Study:

• To investigate the catalytic potential of non-metallic gold clusters for carbon dioxide (CO₂) conversion.
• To correlate the atomic structure of gold clusters with their catalytic activity and product selectivity.

Main Methods:

• Synthesis and characterization of atomically precise non-metallic gold clusters (Au₉, Au₁₁, Au₃₆).
• Testing the catalytic performance of these clusters in CO₂ hydrogenation reactions.

Main Results:

• Au₉ clusters selectively catalyzed CO₂ to methane.
• Au₁₁ clusters demonstrated selectivity towards ethanol production.
• Au₃₆ clusters were effective in producing formic acid from CO₂.

Conclusions:

• Non-metallic gold clusters offer tunable catalytic pathways for CO₂ conversion.
• Precise atomic structure dictates distinct reaction channels, providing molecular-level insights into gold catalysis.