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Morphology-dependent electrocatalytic nitrogen reduction on Ag triangular nanoplates.

Wen-Yan GaoYu-Chen HaoXin SuLi-Wei ChenTong-An BuNan ZhangZi-Long YuZhejiaji ZhuAn-Xiang Yin
Published in: Chemical communications (Cambridge, England) (2019)
Electrocatalytic nitrogen reduction reactions (ENRR) can produce ammonia from nitrogen and water under ambient conditions. Here, we report the morphology-dependent electro-catalytic nitrogen reduction on Ag triangular nanoplates. Boosted by potassium cations, Ag triangular nanoplates with sharp edges exhibit a high faradaic efficiency of 25% with an ammonia yield of 58.5 mg gAg-1 h-1 at a low overpotential of -0.25 V vs. RHE. In comparison, rounded Ag nanoparticles mainly enclosed by {111} and {100} surfaces show a much smaller faradaic efficiency of 16% and ammonia yield of 38 mg gAg-1 h-1 at a larger overpotential (-0.35 V vs. RHE).
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