Enhancing electro-reduction of nitrite to ammonia by loading Co3O4 on CuO to construct elecrocatalytic dual-sites

Abstract

Improving the performance of CuO in electrocatalytic nitrite reduction to ammonia (NIRA) is the priority for designing efficient NIRA electrocatalysts. The electrocatalytic activity of CuO was enhanced by growing Co₃O₄ nanospheres on it. By comparing Co₃O₄@CuO with the mechanically mixed CuO and Co₃O₄ on a rotating ring-disk electrode, we discovered that the enhancement was attributed to a dual-site catalytic pathway.