Sustainable conversion of alkaline nitrate to ammonia at activities greater than 2 A cm^-2.

ABSTRACT: Nitrate (NO₃^‒) pollution poses significant threats to water quality and global nitrogen cycles. Alkaline electrocatalytic NO₃^‒ reduction reaction (NO₃RR) emerges as an attractive route for enabling NO₃^‒ removal and sustainable ammonia (NH₃) synthesis. However, it suffers from insufficient proton (H⁺) supply in high pH conditions, restricting NO₃^‒-to-NH₃ activity. Herein, we propose a halogen-mediated H⁺ feeding strategy to enhance the alkaline NO₃RR performance. Our platform achieves near-100% NH₃ Faradaic efficiency (pH = 14) with a current density of 2 A cm^-2 and enables an over 99% NO₃^--to-NH

SUBMITTER: Liao W 

PROVIDER: S-EPMC10858923 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature