A new rare-earth Sm₂O₃ electrocatalyst was explored for an electrochemical dinitrogen reduction reaction (NRR). Theoretical calculations reveal that the surface-exposed Sm atoms of Sm₂O₃ could effectively catalyze the NRR and restrict hydrogen evolution. Experimentally, we prepared Sm₂O₃ nanoparticles showing an NH₃ yield of 27.2 μg h^–1 mg^–1 and a Faradaic efficiency of 11.5% at −0.6 V in 0.1 M Na₂SO₄, together with outstanding stability, thereby implying the potential of Sm₂O₃ and other rare-earth electrocatalysts for N₂ electroreduction.

中文翻译：

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稀土氧化mar电催化还原氨气的氧化mar催化剂

探索了一种新型的稀土Sm ₂ O ₃电催化剂用于电化学二氮还原反应（NRR）。理论计算表明，Sm ₂ O ₃表面暴露的Sm原子可以有效地催化NRR并限制氢的释放。通过实验，我们制备了Sm ₂ O ₃纳米颗粒，在0.1 M Na ₂ SO _4中，NH _3的产率为27.2μgh ^–1 mg ^–1，法拉第效率为-5％时为11.5％，并具有出色的稳定性，从而暗示了Sm ₂ O _3的电势和其他用于N ₂电还原的稀土电催化剂。