Abstract
Ambient electrochemical NO
reduction is emerging as an appealing approach toward eliminating NO
contaminants and generating NH
simultaneously, but its efficiency is challenged by a lack of active and selective electrocatalysts. In this work, we report CoO nanoparticle decorated N-doped carbon nanotubes as an efficient catalyst for highly selective hydrogenation of NO
to NH
. In 0.1 M NaOH electrolyte with 0.1 M NO
, this catalyst is capable of achieving a large NH
yield of up to 9041.6 ± 370.7 μg h
cm
and a high faradaic efficiency of 93.8 ± 1.5%, with excellent durability. Theoretical calculations reveal the catalytic mechanisms.