Sb2S3 nanoparticles anchored on SnO2 nanofibers: a high-performance hybrid electrocatalyst toward ammonia synthesis under ambient conditions

Abstract

Herein, we report a novel transition-metal-based electrocatalyst, Sb₂S₃ nanoparticles, which exhibits electrocatalytic activity toward ammonia synthesis under ambient conditions. These Sb₂S₃ nanoparticles are further anchored on SnO₂ nanofibers, which act as an active substrate to prevent them from aggregation while enhancing the electrocatalytic activity. The obtained Sb₂S₃@SnO₂ nanofibers deliver excellent ammonia yield (22.0 μg h⁻¹ mg_cat⁻¹) and faradaic efficiency (15.1%) at −0.4 V vs. RHE in 0.1 M Na₂SO₄.