相关实验视频

Updated: Jan 9, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

单原子合金Co₁Zn增强了活性溢出,用于高效的氨电合成,超过2A cm^-2电流密度

Zhipeng Chen¹, Gen Liu¹, Yusi Zhao¹

¹School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Coal Clean Conversion and Low Carbon Utilization, Anhui University of Technology, Ma'anshan, 243032, P.R. China.

Angewandte Chemie (International ed. in English)

|December 2, 2025

概括

一个新型的Co1Zn单原子合金催化剂显著提高了酸盐电还原到氨的速度. 这种催化剂利用溢出效应,实现高氨产率,并显示可充电电池的前景.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

酸盐电还原为氨 (NO3RR) 对于可持续的循环和氨合成至关重要.
反应动力学往往受到缓慢提供活性中间体的限制.
开发高效的催化剂是克服这些局限性的关键.

研究的目的:

设计和合成一个单原子合金 (SAA) 催化剂,用于增强酸电还原.
为了研究NO3RR过程中溢出的机制.
评估催化剂的性能和在储能装置中的应用潜力.

主要方法:

合成Co1Zn单原子合金纳米板 (Co1Zn NSs) 的方法.
电化学评估包括电流密度和法拉第效率测量.
现场光谱技术 (EIS,EPR) 和密度函数理论 (DFT) 的计算.

主要成果:

Co1Zn NSs实现了 2.4 A cm-2 的高电流密度,用于生产氨的法拉第效率为 98.7%.
催化剂比没有溢效应的控制催化剂改进了2.5倍.
Co1Zn NSs显示出在 Zn-NO3−可充电电池中使用的潜力.

结论:

在Co1Zn NS中分离的Co原子起到"水"的作用,促进气溢出.
溢出显著增加了活性覆盖面,降低了反应的能量屏障.
Co1Zn SAA催化剂为高效的酸盐电还原和能量储存提供了一个有前途的战略.

关键词:

氨气氨气氨气是一种气溢出影响气溢出影响亚酸盐的电还原法亚酸盐的电还原法一个原子合金的合金.ZnNO3− 电池电池的使用情况.

更多相关视频

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

相关概念视频

Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...