Alloy Reconstruction in Pyrolytic Bowknot-like Heteronuclear CoFe Clusters for Electrocatalytic Application.

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Doped molecular clusters offer a route to bimetallic doping for electrocatalysts.
• Challenges exist in optimizing doping and alloy engineering at the molecular level for nanostructures.

Purpose of the Study:

• To propose an in situ reconstruction strategy for producing alloy nanostructures from heterometallic clusters.
• To synthesize and characterize novel FeCo alloy-metal oxide nanomaterials for electrocatalysis.

Main Methods:

• Formation of a heteronuclear metal cluster using a Schiff base ligand (L1) and Fe/Co metals.
• Pyrolysis of the cluster to induce in situ reconstruction into alloy-metal oxide/carbon nanomaterials (MOx/CoFe@NC-700).
• Electrocatalytic evaluation for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER).

Main Results:

• Successful synthesis of MOx/CoFe@NC-700 nanomaterials via in situ pyrolysis of bimetallic clusters.
• Demonstrated synergistic interaction between alloy particles and metal oxides, creating active sites.
• Achieved excellent OER and HER performance in alkaline media with low overpotentials (191 mV for OER, 88 mV for HER at 10 mA cm⁻²).

Conclusions:

• The in situ reconstruction of Schiff base bimetallic clusters provides a novel strategy for advanced electrocatalyst development.
• The resulting MOx/CoFe@NC-700 materials show significant potential for efficient water splitting applications.
• This approach effectively combines doping strategies and alloy engineering for enhanced electrocatalytic activity.