Engineering interfacial oxophilicity through surface hydroxyl-regulated trimetallic Ni–Co–Al synergy for enhanced selectivity via electrocatalytic nitrate-to-ammonia conversion

Surface hydroxyl-regulated trimetallic Ni–Co–Al synergy engineers interfacial oxophilicity, tuning NO _x intermediate binding and facilitating the key hydrogenation step toward highly selective nitrate-to-ammonia electroreduction.