Synergy between copper and iron sites inside carbon nanofibers for superior electrocatalytic denitrification

Bimetal Cu/Fe nanoparticles encased in N-doped carbon nanofibers achieved the high-efficiency reduction of nitrate, as well as a nitrate conversion rate of 76%, nitrate removal capacity of 5686 mg N g⁻¹ Cu/Fe and nitrogen selectivity of 94% for 24 h.