Here we successfully synthesized tetrahexahedral copper nanocrystals enclosed with {5 2 0} high-index facets (THH Cu{5 2 0}) by electrochemical square-wave potential method without the utilization of additional capping agents. The THH Cu{5 2 0} exhibited outstanding performance in electroreduction of nitrate to ammonia, achieving a high Faradaic efficiency of 98.3% and a yield rate of up to 9.13 mmol h⁻¹ cm⁻² at −0.90 V (vs. RHE) in neutral solution.

中文翻译：

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电化学合成具有高折射率晶面的四六面体铜纳米晶体用于有效的硝酸盐电还原

在这里，我们通过电化学方波电位法成功合成了由 {5  2  0} 高折射率晶面 (THH Cu{5  2 0}) 包围的四六面体铜纳米晶体，而无需使用额外的封端剂。 THH Cu{5  2 0}在将硝酸盐电还原为氨方面表现出出色的性能，在-0.90 V（vs. RHE） 下实现了98.3%的高法拉第效率和高达9.13 mmol h ^-1 cm ^-2的产率在中性溶液中。