CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia

As an electrocatalyst for nitrate reduction, CoO nanoparticle decorated N-doped carbon nanotubes show a large NH 3 yield up to 9166.37 μg h −1 cm −2 and a high faradaic efficiency of 93.63% in 0.1 M NaOH with 0.1 M NO 3 − .