In Situ Structural Evolution and Activity Descriptor of Atomically Dispersed Catalysts During Nitrate Electroreduction.

ABSTRACT: Single-Atom Catalysts (SAC) have emerged as a promising class of materials for various catalytic applications, including the electrochemical nitrate reduction reaction (eNO₃RR) and consequently ammonia production. While the efficiency and selectivity of these materials have been extensively highlighted for the eNO₃RR, the in situ evolution to their structure and composition during electrocatalysis is largely unexplored and lacks catalyst design principles. To solve this, we investigated a series of high utilization metal-nitrogen-carbon (MNC) SACs (M = Cr, Fe, Co, Ni, and Cu) for eNO₃RR. Except for CuNC, which selectively produced nitrite, all catalysts exhibited Faradaic efficiencies (FE) for ammonia exceeding 50%. NiNC demonstrated the highest performance

SUBMITTER: Braga DS 

PROVIDER: S-EPMC12533412 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature