No abstract

Achieving high efficiency in nitrate (NO 3 − ) to ammonia (NH 3 ) electrocatalysis requires the exploration of advanced electrocatalysts with a welldesigned composition and architecture. In this work, a facile one-step hydrothermal approach was developed for the construction of novel Cu/oxygen vacancy-rich Cu-Mn 3 O 4 heterostructured ultrathin nanosheet arrays on Cu foam (Cu/Cu-Mn 3 O 4 NSAs/CF). Two-dimensional ultrathin nanosheet arrays could increase the exposure of catalytically active centers, and the heterogeneous nanointerface and oxygen vacancies synergistically improve the nitrate-to-ammonia activity over the active centers. Due to the desirable compositional and structural advantages, the Cu/Cu-Mn 3 O 4 NSAs/CF demonstrated excellent performance for the electrocatalytic nitrate reduction to ammonia with high ammonia selectivity (87.6%) and Faradic efficiency (92.4%).

No abstract

By rationally choosing Pd as active metal and Cu as promoting metal, we develop Cu-rich CuPd bimetallic aerogels as a self-supported electrocatalyst for nitrate electroreduction. Spongy aerogel structure provides abundant...