电化学
电催化剂
催化作用
磷
碳纳米管
氨
氮气
兴奋剂
产量(工程)
材料科学
无机化学
共轭体系
氨生产
路易斯酸
纳米技术
化学
电极
有机化学
物理化学
冶金
光电子学
聚合物
作者
Lu‐Pan Yuan,Zeyuan Wu,Wenjie Jiang,Tang Tang,Shuai Niu,Jin‐Song Hu
出处
期刊:Nano Research
[Springer Nature]
日期:2020-01-15
卷期号:13 (5): 1376-1382
被引量:68
标识
DOI:10.1007/s12274-020-2637-8
摘要
The electrochemical nitrogen reduction reaction (NRR) as an energy-efficient approach for ammonia synthesis is hampered by the low ammonia yield and ambiguous reaction mechanism. Herein, phosphorus-doped carbon nanotube (P-CNTs) is developed as an efficient metal-free electrocatalyst for NRR with a remarkable NH3 yield of 24.4 μg·h−1·mg−1cat. and partial current density of 0.61 mA·cm−2. Such superior activity is found to be from P doping and highly conjugated CNTs substrate. Experimental and theoretical investigations discover that the electron-deficient phosphorus sites with Lewis acidity should be genuine active sites and NRR on P-CNTs follows the distal pathway. These findings provide insightful understanding on NRR processes on P-CNTs, opening up opportunities for the rational design of highly-active cost-effective metal-free catalysts for electrochemical ammonia synthesis.
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