Achieving an efficient electrochemical nitrogen reduction reaction (ENRR) remains a great challenge, demanding the development of a new strategy for ENRR catalyst engineering. Herein, we demonstrate a largely improved ENRR by the controlled engineering of Ru nanowires with atomic Pt decoration. Specifically, the readily synthesized Ru₈₈Pt₁₂ nanowires exhibit a high NH₃ production rate of 47.1 μg h⁻¹ mg_cat⁻¹ and faradaic efficiency of 8.9% at −0.2 V, which are 5.3 and 14.6 times higher than those values for Ru nanowires. They also show outstanding stability, as evidenced by the full preservation of the NH₃ yield and faradaic efficiency even after 15 h of electrocatalysis. As revealed by theoretical investigations, the d-band center of Ru atoms is upshifted by the tensile strain due to the presence of Pt atoms, leading to the selective enhancement of N₂ adsorption and the stabilization of N₂H*. Such an atomic engineering method may be applied to precisely tailor other metal nanocatalysts for different applications.

中文翻译：

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通过Pt的原子修饰增强Ru纳米线的电化学氮还原

实现有效的电化学氮还原反应（ENRR）仍然是一个巨大的挑战，需要开发ENRR催化剂工程的新策略。在本文中，我们通过对具有原子Pt装饰的Ru纳米线进行可控工程，证明了ENRR大大改善。具体而言，易于合成的Ru ₈₈ Pt ₁₂纳米线在-0.2 V时具有47.1μgh ^-1 mg _cat ^-1的高NH ₃生产率和8.9％的法拉第效率，比Ru的值高5.3和14.6倍纳米线。它们也显示出出色的稳定性，这可以完全保护NH _3来证明。甚至在电催化15小时后的产率和法拉第效率。如理论研究所揭示的，由于Pt原子的存在，Ru原子的d-带中心由于拉伸应变而上移，从而导致N ₂吸附的选择性增强和N ₂ H *的稳定化。这样的原子工程方法可以被应用以针对不同的应用精确地定制其他金属纳米催化剂。