Electrochemical nitrate (NO) reduction is a sustainable pathway for ambient ammonia (NH) synthesis while eliminating NO pollutants in water. However, the NO reduction reaction (NORR) involves a complicated eight-electron transfer process, which needs highly selective and efficient electrocatalysts. This work describes the synthesis of FeO nanoparticle-decorated 3D pinewood-derived carbon (FeO/PC) as a high-efficiency catalyst for the electroreduction of NO to NH at ambient reaction conditions. When tested in 0.1 M NaOH containing 0.1 M NO, the FeO/PC obtains a large NH yield of 394.8 μmol h cm and high faradaic efficiency (FE) of 91.6% at -0.4 V. Significantly, FeO/PC also delivers high stability.
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