FeS2@TiO2 nanobelt array enabled high-efficiency electrocatalytic nitrate reduction to ammonia

FeS 2 @TiO 2 is a highly active electrocatalyst for the conversion of NO 3 − to NH 3 under ambient conditions, achieving a high faradaic efficiency of 97.0% at −0.4 V and a large NH 3 yield up to 860.3 μmol h −1 cm −2 at −0.7 V in 0.1 M NaOH with 0.1 M NO 3 − .