NO is a dominant atmosphere pollutant, causing ozone depletion and global warming. Currently, electrochemical reduction of NO has gained increasing attention to remove NO, but its product is worthless N. Here, we propose a direct eight-electron (8) pathway to electrochemically convert NO into NH. As a proof of concept, using density functional theory calculation, an Fe double-atom catalyst (DAC) anchored by N-doped porous graphene (Fe@NG) was screened out to be the most active and selective catalyst for NO electroreduction toward NH via the novel 8 pathway, which benefits from the unique bent NO adsorption configuration. Guided by theoretical prediction, Fe@NG DAC was fabricated experimentally, and it can achieve a high NO-to-NH Faradaic efficiency of 77.8% with a large NH yield rate of 2.9 mg h cm at -0.6 V vs RHE in a neutral electrolyte. Our study offers a feasible strategy to synthesize NH from pollutant NO with simultaneous NO removal.
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