Advances in designing efficient electrocatalysts for nitrate reduction from a theoretical perspective

Area of Science:

• Catalysis
• Electrochemistry
• Materials Science

Background:

• Ammonia (NH3) is essential for fertilizers and chemicals, but current Haber-Bosch production is energy-intensive and polluting.
• Developing sustainable, ambient ammonia production methods is critical for modern society and environmental harmony.
• Electrochemical nitrate reduction reaction to ammonia (eNO3-RR) offers a promising green alternative.

Purpose of the Study:

• To review theoretical advancements in designing electrocatalysts for the electrochemical nitrate reduction reaction (eNO3-RR).
• To provide insights into catalyst design strategies for efficient and selective ammonia synthesis.
• To guide future research in developing advanced electrocatalysts for sustainable ammonia production.

Main Methods:

• Theoretical perspective on electrocatalyst design for eNO3-RR.
• Summary of eNO3-RR mechanisms and pathways.
• Categorical discussion of various electrocatalysts, including Cu-based, single-atom (SACs), dual-atom (DACs), and MXene catalysts.

Main Results:

• Overview of theoretical approaches to understanding eNO3-RR mechanisms.
• Analysis of different catalyst classes (Cu-based, SACs, DACs, MXenes) for eNO3-RR.
• Identification of key factors influencing electrocatalyst performance in NH3 synthesis.

Conclusions:

• Theoretical simulations are crucial for designing efficient eNO3-RR electrocatalysts.
• Continued research into novel catalyst structures and compositions is needed.
• This review offers guidance for developing next-generation electrocatalysts for sustainable ammonia production.