催化作用
氨生产
电催化剂
氨
法拉第效率
X射线光电子能谱
拉曼光谱
材料科学
电化学
化学工程
硝酸盐
氧化还原
无机化学
纳米颗粒
化学
纳米技术
电极
物理化学
有机化学
物理
工程类
光学
作者
Yang Liu,Xiaoli Jiang,Yagang Zhang,H. Li,Weidong Huang,Yuanteng Yang,Minghao Ye,Yanxia Liu
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2024-01-01
卷期号:53 (1): 162-170
被引量:3
摘要
The energy-intensive processes for the industrial production of ammonia necessitates the development of new methods to be proposed that will aid in reducing the global energy consumption. Specifically, the electrocatalytic nitrate reduction reaction (NO3RR) to produce ammonia is more thermodynamically feasible than the electrocatalytic nitrogen reduction reaction (NRR). However, it is hindered by a low catalytic activity due to its complex reaction pathways. Herein, we synthesized a novel electrocatalyst, RuOx-Co3O4 nanoparticles, with abundant interfaces, which exhibited an enhanced catalytic activity for efficient ammonia synthesis. This catalyst delivered a partial current density of 65.8 mA cm-2 for NH3 production, a faradaic efficiency (FE) of 89.7%, and a superior ammonia yield rate of up to 210.5 μmol h-1 cm-2 at -0.6 V vs. RHE. X-ray photoelectron and Raman spectroscopy revealed that the formed interfacial Ru-O-Co bond can decorate the electronic structures of the active sites and accelerate the absorption of NO3-, thus promoting the production of ammonia.
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