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通过在中性电解质中通过Au纳米粒子和MIL-101 (Fe) 之间的相互作用来增强N2激活,促进电催化N₂减少到NH₃

Ziyang Ni¹, Fengxiang Yin^1,2, Jie Zhang^2,3

¹Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P. R. China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|March 22, 2024

概括

这项研究开发了金纳米粒子催化剂MIL-101 ((Fe) 对于高效的电催化降解反应 (NRR),以可持续地生产氨. 15%Au/MIL-101(Fe) 催化剂实现了高氨产量和法拉第效率,证明了增强的激活.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

电催化降解反应 (NRR) 是一个有前途的可持续氨生产方法.
挑战包括缓慢的动力学和相互竞争的副作用反应,阻碍实际应用.

研究的目的:

为高效的NRR开发新的电催化剂.
为了研究金纳米粒子 (Au NPs) 和MIL-101 (Fe) 支持的协同效应.

主要方法:

合成了使用一步降低策略的xAu/MIL-101(Fe) 催化剂.
使用MIL-101 ((Fe) 作为Au NPs分散的高表面积支持.
利用现场FTIR光谱学来阐明NRR机制.

主要成果:

15%Au/MIL-101(Fe) 催化剂表现出最高的氨产量 (46.37 μg h−1 mg−1 cat) 和法拉第效率 (39.38%) 在 -0.4 V 与 RHE.
Au NPs和MIL-101 (Fe) 之间的强烈相互作用增强了电子传输和N2激活.
现场FTIR证实了结合交替路径,并加强了NN债券激活.

结论:

开发的Au/MIL-101 (Fe) 催化剂显示了通过电催化NRR实现可持续氨合成的巨大潜力.
Au NPs和MIL-101 ((Fe) 支持之间的协同相互作用对于高效的NRR性能至关重要.

关键词:

在AU纳米粒子.在MIL-101中,MIL-101是MIL-101的代名词.电催化剂是一种电催化剂.降解反应是一种降解反应.

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