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

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.0K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.0K
Formation of Complex Ions03:45

Formation of Complex Ions

23.5K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.5K
Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

10.1K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
10.1K
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

544
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
544

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

Polyvinyl-based hole-transporting materials processed with non-destructive and green solvents for tin-lead perovskite solar cells and all-perovskite tandems.

Chemical science·2026
Same author

Development of a multimodal large language model for early warning and diagnosis of chronic ocular GVHD.

NPJ digital medicine·2026
Same author

The research progress of gastric cancer vaccines: a narrative review.

Translational cancer research·2026
Same author

Application of tandem mass spectrometry for blood acylcarnitine and amino acid profiling in differentiating etiologies of neonatal cholestasis.

Frontiers in pediatrics·2026
Same author

Author Correction: UV and thermally stable hole-selective contacts with enhanced assembly density for inverted perovskite solar cells.

Nature materials·2026
Same author

Revascularization of Transcortical Vessels Improves Tendon-to-Bone Healing for Rotator Cuff Repair.

The American journal of sports medicine·2026

相关实验视频

Updated: Jun 15, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.5K

富含氧的覆盖范围定位在原子电网内,用于增强氧的进化电催化.

Hao Yang Lin1, Qian Qian Yang1, Miao Yu Lin1

  • 1Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Advanced materials (Deerfield Beach, Fla.)
|August 23, 2024
PubMed
概括

这项研究引入了在质子交换膜 (PEM) 水电解中氧化演化反应 (OER) 的新型原子电网催化剂,显著提高了能源效率和稳定性.

关键词:
它们是原子网格.氧气覆盖范围 氧气覆盖范围氧气进化反应反应 氧气进化反应响应式支持 响应式支持

更多相关视频

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K
Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.2K

相关实验视频

Last Updated: Jun 15, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.5K
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K
Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
10:01

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase

Published on: December 4, 2017

12.2K

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:

  • 在氧化演化反应 (OER) 催化剂中,低效的活性部位利用限制了质子交换膜 (PEM) 水电解的能量效率.
  • 开发先进的催化剂对于提高水分裂性能至关重要.

研究的目的:

  • 在二氧化 (MnO2-x) 支架上设计和演示高密度 (Ir) 原子电网催化剂.
  • 通过金属支合作,提高PEM水电解中的OER动力学和能源效率.

主要方法:

  • 在反应性 MnO2-x 支架上制造具有高密度 Ir 位点的原子网格结构.
  • 实验性表征以阐明MnO2-x在调节氧气覆盖中的作用.
  • 电化学测试用于评估OER性能,包括超电位和质量活性.

主要成果:

  • 在MnO2-x上的Ir原子网表现出由于低价值Mn物种而增强的氧气覆盖.
  • 在10 mA cm-2时达到166 mV的超低超电位,在500 mA cm-2时达到283 mV.
  • 在PEM电解器中表现出比商业Iro2高380倍的质量活性和优越的长期稳定性.

结论:

  • 开发的金属支合作战略有效地提高了OER的性能.
  • 这种催化剂设计为高效和稳定的PEM水电解提供了一个有希望的途径.
  • 这些发现凸显了原子级催化剂设计对于能量转换应用的重要性.