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

Electron Carriers01:24

Electron Carriers

84.2K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
84.2K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

6.3K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
6.3K
Electrolysis03:00

Electrolysis

26.2K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.2K
Nuclear Transmutation03:20

Nuclear Transmutation

17.5K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
17.5K
Electrodeposition01:08

Electrodeposition

616
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
616

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

A universal N<sub>2</sub>O<sub>4</sub>-cavity strategy for precisely spaced, durable dual-atom ORR catalysts.

Chemical science·2025
Same author

Engineering Ni-N<sub>2</sub>O<sub>2</sub> Coordination in Single-Atom Catalysts for Alkaline Hydrogen Evolution.

Inorganic chemistry·2025
Same author

Upcycling PET Coupled with Energy-Saving H<sub>2</sub> Production from Seawater at Asymmetric Active Center.

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

Uniformly structured asymmetric coordination Ce single-atom catalysts for stable and efficient oxygen reduction reaction.

Chemical communications (Cambridge, England)·2025
Same author

Triple Synergy Engineering via Metal-Free Dual-Atom Incorporation for Self-Sustaining Acidic Ammonia Electrosynthesis.

Angewandte Chemie (International ed. in English)·2025
Same author

Constructing the coordination environment of SO in NiS/WO<sub>3</sub>/SnS<sub>2</sub> for photoelectrochemical water splitting.

Journal of colloid and interface science·2025

相关实验视频

Updated: Jun 16, 2025

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

18.1K

有效的N2电还原是通过在原子分散的W位点上线性电荷转移而实现的.

Jin Wan1, Dong Liu1, Chuanzhen Feng1

  • 1The School of Chemistry and Chemical Engineering, Chongqing University 174 Shazheng Street, Shapingba District Chongqing City 400044 P. R. China.

Chemical science
|August 16, 2024
PubMed
概括

研究人员开发了用于电催化降解反应 (NRR) 的新型单/双原子催化剂,实现了创纪录的氨生产效率,并揭示了对催化机制的见解.

更多相关视频

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
07:47

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

10.8K
Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
06:58

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization

Published on: July 12, 2016

9.5K

相关实验视频

Last Updated: Jun 16, 2025

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

18.1K
Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
07:47

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

10.8K
Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
06:58

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization

Published on: July 12, 2016

9.5K

科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 催化剂是一种催化剂.

背景情况:

  • 电催化降解反应 (NRR) 为生产氨 (NH3) 的哈伯-博什工艺提供了一个可持续的替代方案.
  • 开发高效的NRR催化剂和理解它们的机制是重大挑战.

研究的目的:

  • 设计和合成新的原子分散 (W) 催化剂,以提高NRR.
  • 为了研究电荷转移和NRR性能之间的关系.
  • 阐明用于氨合成的基于W的催化剂的催化机制.

主要方法:

  • 用自捕捉方法将原子分散的W原子嵌入V2-xCTz中.
  • 电催化性能通过测量氨产量和法拉第效率 (FE) 来评估.
  • 密度函数理论 (DFT) 的计算被用来研究反应机制和能量障碍.

主要成果:

  • 在n-W/V2-xCTz催化剂实现了121.8μg h-1 mg-1和FE的34.2%的的记录产量在-0.1V与RHE.
  • DFT计算显示了邻近W原子的协同效应,将限制电位 (UL) 降至0.32V.
  • UL和集成晶体轨道汉密尔顿群体 (ICOHP) 之间的线性关系被确立为活动描述符.

结论:

  • 原子分散的W催化剂在电催化NRR方面表现出了卓越的性能.
  • 邻近的单个原子在通过协同效应增强反应动力学方面发挥着至关重要的作用.
  • 该研究为NRR活动提供了一个新的描述符,并对基础电子结构-性能关系提供了洞察力.