Strong d-p orbital hybridization in cobalt porphyrin cages promotes electrochemical nitrate reduction to ammonia.

ABSTRACT: The electrocatalytic reduction of nitrate (NO₃RR) to ammonia presents a viable solution for addressing nitrate pollution and offers an environmentally-friendly, energy-efficient alternative for industrial ammonia synthesis. However, the absence of efficient electrocatalysts impedes its industrial application. In this study, we constructed a porphyrin organic cage (PB-2) through the covalent-bonded self-assembly. Subsequently, metalized porphyrin organic cages, PB-M (M = Co, Ni, Cu), were synthesized via post-modification of PB-2. These PB-M catalysts were utilized to elucidate the reaction pathway and intrinsic structure-performance relationship of the NO₃RR. Experimental results indicate that PB-Co exhibits the highest activity and ammonia selectivity (FE

SUBMITTER: Wu Y 

PROVIDER: S-EPMC12797132 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature