Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
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 JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Catalysis02:50

Catalysis

26.7K
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.
26.7K
Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

8.0K
For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
8.0K

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

Strain Engineering in Graphene at the Nanometer Scale.

Nano letters·2025
Same author

Resolving the Structural Duality of Graphene Grain Boundaries.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Growing and nanomanipulating heterostructures of α-bismuthene in a nearly isolated state.

Nanoscale·2025
Same author

Aperiodic Modulation of Graphene Driven by Oxygen-Induced Reconstruction of Rh(110).

The journal of physical chemistry. C, Nanomaterials and interfaces·2023
Same author

MoS<sub>2</sub> Photoelectrodes for Hydrogen Production: Tuning the S-Vacancy Content in Highly Homogeneous Ultrathin Nanocrystals.

ACS applied materials & interfaces·2023
Same author

Growth of 1D ClAlPc molecular chains mediated by graphene moiré patterns.

Nanoscale·2023

相关实验视频

Updated: Jun 9, 2025

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

3.5K

在纳米催化剂中挖掘原子动力学

Antonio J Martínez-Galera1,2,3, Rocío Molina-Motos1, José M Gómez-Rodríguez2,3,4

  • 1Departamento de Física de Materiales, Universidad Autónoma de Madrid, Madrid E-28049, Spain.

ACS applied materials & interfaces
|October 25, 2024
PubMed
概括

研究人员发现,纳米粒子在低温下经历内部原子重组,影响它们的催化活性. 这一发现对于设计高效的纳米催化剂来说至关重要.

关键词:
两维材料是二维材料.纳米催化剂的纳米催化纳米颗粒是一种纳米粒子.扫描探针显微镜 扫描探针显微镜表面科学 表面科学

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
08:40

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

3.5K
Preparation and 3D Tracking of Catalytic Swimming Devices
06:50

Preparation and 3D Tracking of Catalytic Swimming Devices

Published on: July 1, 2016

7.6K

相关实验视频

Last Updated: Jun 9, 2025

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

3.5K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

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

3.5K
Preparation and 3D Tracking of Catalytic Swimming Devices
06:50

Preparation and 3D Tracking of Catalytic Swimming Devices

Published on: July 1, 2016

7.6K

科学领域:

  • 不同质的催化剂.
  • 材料科学 是一种材料科学.
  • 表面科学是一门科学.

背景情况:

  • 设计高效的纳米催化剂需要了解反应过程中的原子级过程.
  • 实验条件,特别是温度,可以改变纳米粒子结构并诱导聚合.
  • 在基于知识的设计和纳米催化剂的优化中,原子层面的洞察力至关重要.

研究的目的:

  • 在实验条件下研究纳米粒子在原子层面的结构变化.
  • 了解温度对纳米粒子配置的影响及其对催化物的影响.
  • 为了证明原子分辨率显微镜在研究纳米催化剂行为的实用性.

主要方法:

  • 使用扫描探针显微镜,特别是扫描道显微镜 (STM),用于实时空间,原子分辨率的调查.
  • 在化过程中研究纳米粒子系统的现象学.
  • 在h-BN/Ru(0001) 表面上生长的 (Ir) 纳米粒子分析.

主要成果:

  • 在相对较低的温度下,在Iron纳米颗粒中证明了内部原子重组.
  • 观察到,这种重组减少了外部原子的低协调.
  • 在催化过程中发生的确定纳米粒子重组.

结论:

  • 内部原子重组显著影响纳米催化剂的反应性.
  • 像STM这样的原子分辨率技术对于在异质催化中访问原子规模的过程至关重要.
  • 这项研究为下一代纳米催化剂的精确,原子对原子的设计提供了基本的见解.