Iron Nanoparticles on Porous Carbon Discs: Electrocatalysts with Over 30% Energy Efficiencies for the Production of Ammonia from Nitrate.

ABSTRACT: Disc-shaped precursor materials (Fe-HBD) are prepared by the complexation of iron with 2,5-dihydroxy-1,4-benzoquinone. Through the carbonization of Fe-HBD at 700 °C, Fe nanoparticles on carbon disc matrixes (CD@Fe-700) are synthesized. The CD@Fe-700 with a high surface area of 424 m² g^-1 and micro/mesoporosity showed promising electrocatalytic performance in the nitrate reduction reaction (NO₃RR) to ammonia with ammonia yield rates of 1.8-13.5 mg h^-1 cm^-2 at overpotentials of -0.2--0.6 V (vs. RHE), reaching energy efficiencies up to 32.6-34.7%.

SUBMITTER: Park D 

PROVIDER: S-EPMC12713075 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature