Excavated cubic platinum–iridium alloy nanocrystals with high-index facets as highly efficient electrocatalysts in N2 fixation to NH3

Excavated cubic Pt93Ir7 alloy nanocrystals enclosed by high-index {710} facets exhibit excellent electrocatalytic properties for the nitrogen reduction reaction (NRR) with a high faradaic efficiency (40.8%) and NH3 production rate (28 μg h−1 cm−2). The presence of Ir on the Pt stepped surface suppre...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019, Vol.55 (63), p.9335-9338
Main Authors: Yu-Jie, Mao, Lu, Wei, Xin-Sheng, Zhao, Yong-Sheng, Wei, Jian-Wei, Li, Tian Sheng, Fu-Chun, Zhu, Tian, Na, Zhi-You Zhou, Shi-Gang, Sun
Format: Article
Language:English
Subjects:
Absorption spectra
Ammonia
Chemical reduction
Electrocatalysts
Hydrogen evolution reactions
Iridium base alloys
Nanocrystals
Nitrogenation
Platinum
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Summary:Excavated cubic Pt93Ir7 alloy nanocrystals enclosed by high-index {710} facets exhibit excellent electrocatalytic properties for the nitrogen reduction reaction (NRR) with a high faradaic efficiency (40.8%) and NH3 production rate (28 μg h−1 cm−2). The presence of Ir on the Pt stepped surface suppresses the hydrogen evolution reaction (HER) and accelerates the NRR.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc04034j