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

26.6K
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.
26.6K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.2K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.2K

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

Inherently Conducting Polymeric Materials from Conjugated Polyisoprene-Based Rubbers.

ACS applied materials & interfaces·2026
Same author

Transforming disorder in the design of advanced high-entropy oxide electrocatalysts for zinc-air batteries.

Nature communications·2026
Same author

Approaching the Sabatier optimum <i>via</i> a triple-defect synergistic strategy for enhanced oxygen evolution reaction.

Materials horizons·2025
Same author

Thousand-hour salt precipitation-free CO<sub>2</sub>-to-ethylene electrosynthesis at high current densities.

Nature communications·2025
Same author

Copper-stabilized bismuth subcarbonate electrocatalysts for durable large-scale formate production at kilowatt power.

Nature communications·2025
Same author

Recent Developments in Solid-State Electrolytes for Advanced Energy Storage Devices.

ACS nano·2025

相关实验视频

Updated: Jun 4, 2025

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

7.7K

一个高效的进化催化剂,使用Pt修饰的Ni3S2/MoS2构建,在整个pH范围内的动力学优化.

Maoyuan Li1, Zhongrui Yu2, Zulin Sun1

  • 1School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China. binliu@shu.edu.cn.

Nanoscale
|December 24, 2024
PubMed
概括

改性增强了Ni3S2/MoS2的异构结构,在所有pH水平上进行高效的演化反应 (HER) 和氧演化反应 (OER) 催化. 这提高了能量转换技术的电催化剂性能.

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

11.9K
Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
09:18

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

11.4K

相关实验视频

Last Updated: Jun 4, 2025

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

7.7K
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

11.9K
Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
09:18

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

Published on: June 21, 2017

11.4K

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:

  • 电催化剂材料对于能量转换中的演化反应 (HER) 效率至关重要.
  • Ni3S2/MoS2异构结构显示出作为双功能催化剂的希望,但受到中间化学吸收能量的限制.
  • 催化剂的性能取决于pH值,这阻碍了广泛的应用.

研究的目的:

  • 为了增强HER和OER的Ni3S2/MoS2异构的双功能催化活性.
  • 在不同的pH环境中克服高化学吸收能量的局限性.
  • 调查微量 (Pt) 修饰在提高电催化性能方面的作用.

主要方法:

  • 合成Pt修饰的Ni3S2/MoS2异构结构.
  • 在广泛的pH范围内对HER和OER活动的电化学表征.
  • 理论模拟分析电子结构和催化机制.

主要成果:

  • 经过Pt修改的Ni3S2/MoS2实现了HER的低超电位:64mV (酸性) 和83mV (性) 在100mA cm-2.0时.
  • 在酸性,中性和性介质中观察到HER和OER的增强电催化活性.
  • 理论模拟证实了优化的电子配置和在Pt修改后增强的电子转移.

结论:

  • 痕迹Pt修改显著提高了Ni3S2/MoS2异构的HER和OER性能.
  • 经Pt修饰的催化剂表现出卓越的pH-通用双功能催化活性.
  • 这项工作为先进的电催化剂在能源转换中的实际应用铺平了道路.