异质结
材料科学
催化作用
氨
化学工程
氨生产
法拉第效率
功率密度
电化学
电极
化学
光电子学
物理化学
功率(物理)
热力学
有机化学
物理
工程类
作者
Jiameng Liu,Linghao He,Shuangrun Zhao,Sizhuan Li,Lijun Hu,Jia‐Yue Tian,Junwei Ding,Zhihong Zhang,Miao Du
标识
DOI:10.1002/advs.202205786
摘要
A defect-rich 2D p-n heterojunction, Cox Ni3-x (HITP)2 /BNSs-P (HITP: 2,3,6,7,10,11-hexaiminotriphenylene), is constructed using a semiconductive metal-organic framework (MOF) and boron nanosheets (BNSs) by in situ solution plasma modification. The heterojunction is an effective catalyst for the electrocatalytic nitrogen reduction reaction (eNRR) under ambient conditions. Interface engineering and plasma-assisted defects on the p-n Cox Ni3-x (HITP)2 /BNSs-P heterojunction led to the formation of both Co-N3 and B…O dual-active sites. As a result, Cox Ni3-x (HITP)2 /BNSs-P has a high NH3 yield of 128.26 ± 2.27 µg h-1 mgcat.-1 and a Faradaic efficiency of 52.92 ± 1.83% in 0.1 m HCl solution. The catalytic mechanism for the eNRR is also studied by in situ FTIR spectra and DFT calculations. A Cox Ni3-x (HITP)2 /BNSs-P-based Zn-N2 battery achieved an unprecedented power output with a peak power density of 5.40 mW cm-2 and an energy density of 240 mA h gzn-1 in 0.1 m HCl. This study establishes an efficient strategy for the rational design, using defect and interfacial engineering, of advanced eNRR catalysts for ammonia synthesis under ambient conditions.
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