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

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.
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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

Unlocking stable intermediate states in SrFeO<sub>3-δ</sub> through voltage control of oxygen non-stoichiometry.

Nature communications·2026
Same author

Electrostriction-driven phase instability enables giant pseudo-piezoelectricity in Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2X</sub>.

Science advances·2026
Same author

Atomic Imaging of Ion-Triggered Flexibility and Local Electric Field Response in Zeolite Rings.

Journal of the American Chemical Society·2026
Same author

Real-Time Observation of Thermal Reshaping Mechanisms in Gold Nanostars.

Nano letters·2026
Same author

Topotactic Phase Transition in Epitaxial La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3-δ</sub> Films Induced by Oxygen Getter Assisted Thermal Annealing.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Unraveling the dynamics of conductive filaments in MoS<sub>2</sub>-based memristors by operando transmission electron microscopy.

Nature communications·2025

相关实验视频

Updated: Jun 4, 2026

A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
07:15

A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens

Published on: June 2, 2017

9.7K

原子尺度的洞察力纳米粒子在失位工程催化剂的失位处的解离.

Moritz Lukas Weber1,2,3, Moritz Kindelmann4,5, Dylan Jennings4,5,6

  • 1Peter Grünberg Institute, Electronic Materials (PGI-7), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.

Advanced materials (Deerfield Beach, Fla.)
|September 13, 2025
PubMed
概括

控制纳米粒子特性是持久催化剂的关键. 这项研究表明,溶解催化剂的工程位移如何能够精确地控制纳米粒子的形成和分布,从而提高催化剂的稳定性.

关键词:
失位工程工程是指工艺上的失位.移位 移位 移位 移位 移位经轴的薄膜是表轴的薄膜.金属外溶液中的金属.纳米颗粒是一种纳米粒子.

更多相关视频

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
10:19

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

Published on: July 18, 2017

12.5K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.6K

相关实验视频

Last Updated: Jun 4, 2026

A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
07:15

A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens

Published on: June 2, 2017

9.7K
Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
10:19

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

Published on: July 18, 2017

12.5K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.6K

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 催化剂是一种催化剂.

背景情况:

  • 纳米粒子粗化降低了催化剂的性能,尽管金属溶解催化剂的强度很高.
  • 观察到溶解的纳米颗粒在缺陷附近的度增加,例如脱位.

研究的目的:

  • 为了研究金属外溶反应中脱位的作用.
  • 探索脱位工程,以控制脱位相关纳米颗粒的合成.
  • 了解影响纳米粒子核化在失位的机制.

主要方法:

  • 工程表轴薄膜具有局限的高位移密度.
  • 使用现场扫描传输电子显微镜 (STEM) 进行原子级观测.
  • 与表面纳米粒子位置相关联的批量位移结构.

主要成果:

  • 在异位和纳米粒子位点之间证明了原子层次的相关性.
  • 鉴定出出溶活性受体沿着位移的积累作为一个关键因素.
  • 在可能降低核化能量障碍的位移处发现了格子扭曲.

结论:

  • 已建立的概念验证,用于在脱溶催化剂中使用工程失位.
  • 展示了合成具有量身定制属性的纳米粒子的潜力.
  • 突出了改善溶解纳米颗粒的热稳定性和横向分布的相关性.