NiO-Incorporated Cu/CuO Nanowires for Highly Efficient Electrochemical Nitrate Reduction to Ammonia.

Electrochemical nitrate reduction to ammonia (NRA) is a promising sustainable way to synthesize ammonia (NH) from nitrate (NO ) contaminants. Cu-based electrocatalysts are frequently utilized for NRA due to their strong NO adsorption and de-oxygenation ability. However, this kind of catalyst usually possesses the weak water dissociation ability, resulting in insufficient proton supply in alkaline media to retard the following hydrogenation step of O-containing intermediates (*NO, typically NO ) to target NH.