CoFe nanoalloys encapsulated in nitrogen-doped carbon for efficient nitrite electroreduction to ammonia†
Abstract
Electrochemical nitrite (NO2−) reduction to ammonia (NH3) can not only remove harmful NO2− in wastewater, but also produce valuable NH3. Herein, a CoFe nanoalloy encapsulated in nitrogen-doped carbon (CoFe-NC) electrocatalyst was fabricated for nitrite reduction, which achieved a high NH3 Faraday efficiency of 94.5%, and a large NH3 yield of 4050.6 μg h−1 cm−2 in a neutral electrolyte.