Synergistic Cu-Sb oxide electrocatalyst synthesized by sol-gel method for high-efficiency nitrate reduction to ammonia with suppressed hydrogen evolution.

ABSTRACT: Antimony is one of the hydrogen evolution poison and copper is one of the well-known catalysts for the nitrate reduction to ammonia (NRA). Therefore, to synthesize an efficient electrode that can have the highest selectivity for the reduction of nitrate to ammonia and is accompanied by the lowest hydrogen evolution, in this study, a combination of different Cu to Sb ratios was prepared on a Ti substrate using the sol-gel method in the form of crystalline oxides (CuSb_yOₓ/Ti) to achieve the best catalytic activity and ammonia yield. A 2:1 ratio of Sb to Cu synthesized and calcined at 600 °C had the best catalytic properties. CuSb_yOₓ/Ti electrocatalysts were evaluated for NRA in an alkaline medium. The CuSb₂O_x electrocatalyst had the highest activit

SUBMITTER: Babaei A 

PROVIDER: S-EPMC12824177 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature