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摘要：Electrocatalytic nitrate reduction to ammonia is an attractive alternative route for the traditional Haber-Bosch process, yet suffers from unsatisfied efficiency and selectivity due to multiple intermediates as well as the competitive hydrogen evolution reaction. Herein, we report a defect-rich AuCu@Ag nanowires (AuCu@Ag NWs) with exclusive strain effect as an efficient electrocatalyst for nitrate reduction reaction (NO3-RR). AuCu@Ag NWs catalyst shows excellent electrocatalytic performance for NO3- to NH3 in the NO3-RR process, with the NH3 yield rate of 975.1 mu g h(-1) mg(cat.)(-1), Faraday efficiency of 96.9% and NH3 selectivity of 95.7%. DFT theoretical investigation manifests that the Ag atomic shell deposited layer-by-layer on AuCu NWs generates exclusive strain effect that accelerates the adsorption of NO3- and reaction intermediates, thereby enhances the NO3-RR activity. This work opens up new avenues for rational construction of high-performance NO3-RR electrocatalysts by synergistically modulating the electronic configuration of the active atoms through defect and strain engineering.

卷号：350

期号：-

是否译文：否