21:I[432972,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/1270dead247da766.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/2d7aa753e81324a8.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/263f2cdcb9aa2341.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 22:T537,Electrocatalytic nitrate (NO₃^-) reduction reaction (NO₃^-RR) represents a promising strategy for both wastewater treatment and ammonia (NH₃) synthesis. However, it is difficult to achieve efficient NO₃^-RR on a single-component catalyst due to NO₃^-RR involving multiple reaction steps that rely on distinct catalyst properties. Here we report a facile alloying/dealloying-driven phase-separation strategy to construct a bimodal nanoporous Ag/Ag-Co tandem catalyst that exhibits a remarkable NO₃^-RR performance in a broad NO₃^- concentration range from 5 to 500 mM. In 10 and 50 mM NO₃^- electrolytes, the NH₃ yield rates reach 3.4 and 25.1 mg h^-1 mg_cat.^-1 with corresponding NH₃ Faradaic efficiencies of 94.0% and 97.1%, respectively, outperforming most of the reported catalysts under the same NO₃^- concentration. The experimental results and density functional theory calculations demonstrate that Ag ligaments preferentially reduce NO₃^- to NO₂^-, while bimetallic Ag-Co ligaments catalyze the reduction of NO₂^- to NH₃.

#	Concept	H-Index	Publications	Citations
1	Engineering	1	1	55
2	Chemistry	1	1	55
3	Materials Science	1	1	55
4	Energy Storage	1	1	55
5	Supercapacitors	1	1	55

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