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

Energy Diagrams, Transition States, and Intermediates02:13

Energy Diagrams, Transition States, and Intermediates

19.8K
Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction coordinate represented on the horizontal axis shows how far the reaction has progressed structurally. Positions along the x-axis close to the reactants have structures resembling the reactants, while positions close to the products resemble the products.  Peaks on the energy diagram represent stable structures with measurable lifetimes, while...
19.8K
Catalysis02:50

Catalysis

30.0K
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.
30.0K
Phase Diagrams02:39

Phase Diagrams

48.5K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
48.5K
Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems01:15

Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems

360
Oxidative reactions are pivotal in metabolizing numerous compounds, including pharmaceutical drugs. These reactions often occur in carbon-heteroatom systems, such as carbon-nitrogen, carbon-sulfur, and carbon-oxygen.
In carbon-nitrogen systems, aliphatic and aromatic amines can undergo oxidative reactions. Secondary and tertiary amines, like those found in tricyclic antidepressants, can undergo N-dealkylation, a process that involves the oxidation of the alkyl group. In addition, oxidative...
360
Phase I Reactions: Reductive Reactions01:27

Phase I Reactions: Reductive Reactions

536
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
536
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement01:24

[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement

2.7K
The Claisen rearrangement is a [3,3] sigmatropic rearrangement of allyl vinyl ethers to unsaturated carbonyl compounds. The rearrangement is a concerted pericyclic reaction proceeding via a chair-like transition state.
2.7K

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

Crash injury assessment for wheelchair users using parametric human models and scalable manual wheelchair finite element models.

Traffic injury prevention·2026
Same author

Interfacial Redox Decoupling via Amphiphilic Carbon Dots for Highly Efficient Biphasic Photocatalytic H<sub>2</sub>O<sub>2</sub> Production and Selective Benzyl Alcohol Oxidation.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Effect of medium and tall hood leading edge vehicle front-end characteristics on pedestrian torso injuries.

Traffic injury prevention·2026
Same author

Genetic suppression of myeloid receptor Clec7a attenuates microglia neuroinflammation and promotes microglial phagocytosis to delay disease progression in ALS models.

bioRxiv : the preprint server for biology·2026
Same author

A multi-omics dissection of INHBA<sup>+</sup> CAF-mediated epithelial-mesenchymal transition and immune suppression in colorectal cancer.

Journal of translational medicine·2026
Same author

Preparative Separation of Antioxidants from Sea Buckthorn and Its Antioxidant Activity In Vitro via Endothelial Function Regulation.

International journal of molecular sciences·2026

相关实验视频

Updated: Jan 7, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.9K

在CO2降低多碳产品之间设计一个有序的中间阶段.

Xuan Zheng1, Yi Lu2, Jingwen Hu1

  • 1Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.

ACS nano
|December 29, 2025
PubMed
概括

研究人员开发了一种订购的金铜合金 (Au1Cu1),用于高效的电化学二氧化碳减排 (CO2RR) 制成有价值的多碳产品. 这一突破通过克服C-C键形成的挑战,增强了碳回收和可持续能源.

关键词:
减少二氧化碳的减少双金属合金 双金属合金金属间化合物 金属间化合物远距离订购的时间多碳产品是多碳产品.

更多相关视频

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.3K
Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
06:34

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner

Published on: October 25, 2017

8.3K

相关实验视频

Last Updated: Jan 7, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

18.9K
Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

8.3K
Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
06:34

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner

Published on: October 25, 2017

8.3K

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:

  • 电化学降低CO2 (CO2RR) 到多碳 (C2) 产品是碳回收的关键,但由于C1产品偏好和难以形成C-C键,在C2选择性方面面临挑战.
  • 双金属合金提供可调节的催化剂,但随机原子排列限制了对活性位点的控制和C1/C2选择性.

研究的目的:

  • 开发一种用于合成有序双金属合金来增强CO2RR的战略.
  • 调查原子排序对CO2RR中的C2产品选择性的影响.

主要方法:

  • 使用聚合物纳米纤维介导的方法合成有序Au1Cu1和无序Au3Cu1,Au1Cu3合金.
  • 电化学性能测试,包括法拉第克效率测量.
  • 在现场进行表征和理论计算,以分析活动地点配置和反应机制.

主要成果:

  • 订购的Au1Cu1合金表现出优化的d带中心和平衡的中间结合,有利于C-C合而不是C1形成.
  • Au1Cu1/CNFs催化剂在0.5V的C2产品与RHE相比,达到55.6%的峰值法拉第效率.
  • Au1Cu1的电子和几何配置为*CHO-*CO合提供了最低的能量屏障.

结论:

  • 在双金属合金排序中精确的原子级控制被证明是CO2RR的可行策略.
  • 订购的Au1Cu1金属间合金有效地引导CO2RR向有价值的多碳产品,推进碳回收技术.