Fe Nanoparticles Decorated Pinewood‐Derived Carbon for Highly Efficient Electrocatalytic Conversion of Nitrite to Ammonia

Abstract Electrochemical nitrite (NO 2 − ) reduction reaction (NO 2 − RR) presents a sustainable approach for the electrochemical synthesis of ammonia (NH 3 ), concurrently facilitating the removal of NO 2 − contaminants. Developing NO 2 − RR electrocatalysts with high NH 3 selectivity and satisfactory NH 3 yield poses a significant challenge. Herein, we present Fe nanoparticles decorated pinewood‐derived carbon (Fe/PC) as a highly proficient electrocatalyst for the conversion of NO 2 − to NH 3 . The well‐designed Fe/PC electrocatalyst achieves an impressive NH 3 yield of 21924.6 μg h −1 cm −2 and a high Faradic efficiency of 91.5 % under ambient conditions. Notably, the Fe/PC catalyst exhibits robust stability in both prolonged electrolysis and cyclic electrolysis assessments.