A biomimetic MoFe-NC for efficient N₂ electroreduction to NH₃

Area of Science:

• Materials Science
• Electrochemistry
• Catalysis

Background:

• Nitrogen fixation is crucial for agriculture and industry.
• Current industrial ammonia production is energy-intensive.
• Biomimetic catalysts offer sustainable alternatives.

Purpose of the Study:

• To synthesize and evaluate a novel Mo/Fe-nitrogen-carbon (MoFe-NC) catalyst.
• To investigate the catalyst's performance for electrochemical nitrogen reduction reaction (NRR).
• To mimic biological nitrogen fixation for efficient ammonia synthesis.

Main Methods:

• Synthesis of a binary Mo/Fe-nitrogen-carbon material.
• Electrochemical characterization of the MoFe-NC catalyst.
• Evaluation of NRR performance under ambient conditions.

Main Results:

• The MoFe-NC catalyst achieved a maximum N2 reduction faradaic efficiency of 39.9%.
• A high NH3 yield rate of 28.5 μg mgcat−1 h−1 was recorded.
• The catalyst operates effectively under ambient temperature and pressure.

Conclusions:

• The developed MoFe-NC catalyst shows excellent potential for sustainable ammonia synthesis.
• Biomimetic design is a viable strategy for creating efficient NRR electrocatalysts.
• This catalyst offers a promising pathway towards greener industrial ammonia production.