法拉第效率
催化作用
电化学
密度泛函理论
材料科学
单独一对
氮气
选择性
产量(工程)
离解(化学)
氧化还原
Boosting(机器学习)
化学工程
纳米技术
无机化学
电极
化学
物理化学
分子
计算化学
有机化学
工程类
机器学习
计算机科学
冶金
作者
Bin Fang,Xiao Wang,Shuaishuai Zhang,Lingling Zhang,Rui Zhang,Ke Wang,Shuyan Song,Hongjie Zhang
出处
期刊:Small
[Wiley]
日期:2024-01-09
被引量:3
标识
DOI:10.1002/smll.202310268
摘要
Abstract Electrocatalytic nitrogen reduction reaction (NRR) paves a sustainable way to produce NH 3 but suffering from the relatively low NH 3 yield and poor selectivity. High‐performance NRR catalysts and a deep insight into the structure‐performance relationship are higher desired. Herein, a molten‐salt approach is developed to synthesize tiny CeO 2 nanoparticles anchored by ultra‐thin MoN nanosheets as advanced catalysts for NRR. Specifically, a considerably high NH 3 yield rate of 27.5 µg h −1 mg −1 with 17.2% Faradaic efficiency (FE) can be achieved at ‐0.3 V vs (RHE) under ambient conditions. Experimental and density functional theory (DFT) calculations further point out that the incorporation of MoN with CeO 2 can promotes the enlargement of the electron deficient area of nitrogen vacancy site. The enlarged electron deficient area contributes to the accommodation of lone pair electrons of N 2 , which dramatically improves the N 2 adsorption/activation and the key intermediates (*NNH and *NH 3 ) generation, thus boosting the NRR performance.
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