Search research articles

关于 JoVE

概览领导团队博客 JoVE 帮助中心

作者

出版流程编辑委员会范围与政策同行评审常见问题投稿

图书馆员

用户评价订阅访问资源图书馆顾问委员会常见问题

研究

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments 存档

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教师资源中心教师网站

使用条款与条件

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.

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序

Same author

Editorial for the Special Issue on Advances in Microfluidic Chips for Chemical and Biomedical Applications.

Micromachines·2026

Same author

Nano-Confined Radical Anion as An NIR-II Photothermal Immunogenic Amplifier for In Situ Cancer Vaccination.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Same author

Singlet Fission among Two Single Molecules.

Journal of the American Chemical Society·2026

Same author

Hot exciton dissociation in graphene nanoribbons.

Nature communications·2026

Same author

Chemical and physical equilibria shape dual ice-nucleation pathways in an organic crystal.

Communications chemistry·2026

Same author

Cyclophane-based shielding strategy for singly dispersed graphene nanoribbons.

Nature chemistry·2026

Search research articles

相关实验视频

Updated: Jun 21, 2025

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

通过压力控制金属扩散的单原子催化剂

Samir H Al-Hilfi^1,2, Xikai Jiang³, Julian Heuer²

¹School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China.

Journal of the American Chemical Society

|July 11, 2024

概括

此摘要是机器生成的。

我们开发了压力控制的金属扩散来制造超高密度单原子催化剂. 降低压力显著降低了原子聚合,导致高级催化剂的单原子负载更高.

更多相关视频

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

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

相关实验视频

Last Updated: Jun 21, 2025

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

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

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

科学领域:

材料科学
催化剂
纳米技术

背景情况:

单原子催化剂 (SAC) 提供高效率,但在合成过程中面临原子聚合的挑战.
在高密度SAC中控制金属原子扩散和稳定至关重要.

研究的目的:

引入压力控制金属扩散作为制造超高密度SAC的新策略.
在降低压力下研究减少聚合的机制.

主要方法:

使用压力控制的金属扩散制造SAC.
分子动力学 (MD) 和计算流体动力学 (CFD) 模拟.
用于有效位点密度验证的电催化氧降解反应 (ORR).
乌尔曼型C-O合反应的演示

主要成果:

降低压力显著抑制了原子聚合,实现了近三倍的单原子负载.
模拟显示了金属跳跃机制,增加了金属结合物的可能性.
该方法在ORR中显示出强大的活性点密度和催化活性.
在由单个Cu位点催化的乌尔曼型C-O合反应中成功应用.

结论:

压力控制金属扩散是一种生产超高密度SAC的有效方法.
这种技术提高了金属原子的分布和催化性能.
开发的SAC显示了各种高效异质催化应用的潜力.