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

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

141
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...
141

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

Lattice Nitrogen-Mediated Amination via an N<sub>2</sub>-Rechargeable Cycle over the Co-Mo Nitride.

Journal of the American Chemical Society·2026
Same author

Pyraclostrobin Exposure Triggers Renal Injury by Activating Wnt/β-Catenin Signaling Pathway-Mediated Renal Fibrosis in Mice.

Journal of applied toxicology : JAT·2026
Same author

Mechanistic study of HES1/PI3K/Akt/mTOR signaling pathway in cisplatin-induced sensorineural hearing loss.

Scientific reports·2026
Same author

Integrated Local-Microstructure Engineering Toward Mechanochemically Robust Ultra-High Nickel Cathodes.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Pyrazole permethrin-induced liver toxicity in mice involves the PI3K/AKT/NF-κB pathway: Integrated network pharmacology and experimental validation.

Toxicology and applied pharmacology·2026
Same author

Facile Formation of Oxygen-Vacancy Gradient Enables In Situ Uniform Prelithiation in Vanadium Oxide Thin-Film Batteries.

Angewandte Chemie (International ed. in English)·2026
Same journal

Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.

Journal of the American Chemical Society·2026
Same journal

Engineering a Thiamine-Dependent Benzoylformate Decarboxylase for Stereodivergent Radical C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Bond Formation.

Journal of the American Chemical Society·2026
Same journal

Accelerated Directional Proton-Coupled Electron Transfer Enabled by Intrinsic Dipole Field in Biomimetic α-Helical Structure.

Journal of the American Chemical Society·2026
Same journal

Alternating Current-Driven Hydrogen Isotope Labeling of Aliphatic Amines Using 1,3-Propanedithiol as an Efficient Hydrogen Atom Transfer Reagent.

Journal of the American Chemical Society·2026
Same journal

Two-Dimensional van der Waals Polar Metal MoOBr<sub>2</sub>.

Journal of the American Chemical Society·2026
Same journal

Negatively Curved Chiral Bilayer Nanographene.

Journal of the American Chemical Society·2026
查看所有相关文章

相关实验视频

Updated: Apr 30, 2026

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

4.5K

调节纳米粒子结构和表面应变,以优化催化.

Sen Zhang1, Xu Zhang, Guangming Jiang

  • 1Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.

Journal of the American Chemical Society
|May 8, 2014
PubMed
概括
此摘要是机器生成的。

控制纳米颗粒菌株可以优化催化. 研究人员通过改变核心结构,增强氧降解反应 (ORR) 活性来调整铁- (FePt) 核心/外纳米颗粒中的 (Pt) 菌株.

更多相关视频

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

3.4K

相关实验视频

Last Updated: Apr 30, 2026

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

4.5K
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

3.4K

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:

  • 控制纳米粒子 (NP) 表面应变对于调整NP表面化学和优化催化是至关重要的.
  • 表面应变,表面原子的压缩或拉伸,显著影响化学反应中的NP性能.

研究的目的:

  • 为了证明表面白金 (Pt) 应变在核心/外铁-白金 (FePt) /Pt NP 中的合理调整.
  • 为了将Pt菌株与氧减少反应 (ORR) 的催化活性相关联.
  • 通过结构诱导的应变控制,优化ORR和其他化学反应的NP催化剂.

主要方法:

  • 合成的核心/外FePt/PtNP与可调节的Pt表面应变.
  • 研究了从面中心立方体 (fcc) 到面中心四边形 (fct) FePt核心的结构过渡.
  • 采用量子力学-分子力学 (QM-MM) 模拟来理解应变效应.

主要成果:

  • 通过将FePt核心从fcc转换为fct结构,实现了Pt表面应变的合理调整.
  • 在fct-FePt/Pt NP中观察到高ORR活性,归因于过度压缩的Pt菌株的释放.
  • 通过在fct-FeCuPt/Pt NP中部分用Cu取代Fe,进一步优化,与商业Pt催化剂相比,导致特定活性增加约10倍.

结论:

  • 结构诱导的表面应变控制是调整NP催化的一种有效策略.
  • fct-FeCuPt/Pt NP代表了ORR的一个高效的催化剂.
  • 这种方法为优化各种化学反应的NP催化剂提供了一条新的途径.