CoS2@TiO2 nanoarray: a heterostructured electrocatalyst for high-efficiency nitrate reduction to ammonia

CoS 2 @TiO 2 nanoarray performs efficiently for NH 3 synthesis via NO 3 − reduction electrocatalysis, attaining a NH 3 yield of 538.21 μmol h −1 cm −2 at −0.7 V and a faradaic efficiency (FE) of 92.80% at −0.5 V vs. RHE in 0.1 M NaOH with 0.1 M NO 3 − .