In situ construction of ZnP2/CuP2 heterojunction for efficient nitrate-to-ammonia electroreduction

Abstract

A ZnP₂/CuP₂ composite catalyst with abundant heterointerfaces was constructed, exhibiting a tandem synergistic effect between ZnP₂ and CuP₂ sites and their interfacially modulated electronic interactions, promoting a favorable NO₃⁻-to-NH₃ reaction pathway. By optimizing the proportion of active sites, a remarkable NH₃ yield of 46.3 mg h⁻¹ mg_cat⁻¹ and a high Faraday efficiency of 98.5% were achieved.