Fabrication of dual-sited Cu doped Co 3 O 4 on nickel foam (Cu–Co 3 O 4 /NF) for segmentally efficient electrochemical nitrate reduction under low conductivity

To tackle the removal of low-concentration nitrate contamination, this work utilizes electrocatalytic reduction technology to convert nitrate into recoverable ammonia, using as-prepared Cu doped Co 3 O 4 on nickel foam composites as the cathode.