Recent Advances in Electrocatalytic Nitrate Reduction to Ammonia.

Area of Science:

• Electrochemistry
• Materials Science
• Sustainable Chemistry

Background:

• Electrocatalytic nitrate reduction (NO₃⁻RR) is a promising route for green ammonia synthesis.
• It offers dual benefits of environmental remediation and resource recovery.
• Current limitations include low catalyst selectivity and stability, hindering practical use.

Purpose of the Study:

• To systematically review recent advances in catalyst design for NO₃⁻RR.
• To explore strategies for enhancing catalyst activity and product selectivity.
• To provide insights into future research directions and challenges.

Main Methods:

• Review of catalyst design strategies: composition regulation, structural engineering, and support strategies.
• Analysis of underlying mechanisms: electronic structure modulation, active site construction, interfacial optimization.
• Discussion on integrating multiple strategies and structure-activity relationships.

Main Results:

• Composition regulation, structural engineering, and support strategies effectively enhance NO₃⁻RR performance.
• These strategies modulate electronic properties, create efficient active sites, and optimize interfacial environments.
• Integration of multiple strategies shows potential for synergistic improvements.

Conclusions:

• Advanced catalyst design is crucial for efficient and stable NO₃⁻RR systems.
• Further research should focus on understanding structure-activity relationships and developing scalable catalysts.
• This field holds significant promise for sustainable ammonia production and environmental solutions.