Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.5K
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...
3.5K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

12.7K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.7K
Catalysis02:50

Catalysis

28.0K
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.
28.0K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.5K
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.
2.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Strength-ductility synergy in medium-entropy alloys via harnessing trace air in additive manufacturing.

Nature communications·2026
Same author

Self-Adaptive Nonstoichiometric High-Entropy Intermetallics Enable Durable Oxygen Evolution under Industrial Current Densities.

ACS nano·2026
Same author

Dynamic Dissolution-Deposition Equilibrium Enables Unprecedented HER Stability in Acidic PEMWE.

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

Precise construction of Pd superstructures with modulated defect properties for solar-driven organic transformation.

Chemical science·2025
Same author

Unveiling the atomistic mechanism of oxide scale spalling in heat-resistant alloys.

Nature communications·2025
Same author

Enhanced Structure Stability of Au Nanobipyramids by an <i>In Situ</i> Customized Silver Armor.

Nano letters·2025

Related Experiment Video

Updated: Oct 14, 2025

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

3.8K

Self-supported efficient hydrogen evolution catalysts with a core-shell structure designed via phase separation.

Zhibin Li1, Ruoyu Wu1, Yuren Wen2

  • 1State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China. xjliu@ustb.edu.cn.

Nanoscale
|November 8, 2021
PubMed
Summary

Researchers developed novel, self-supported nanoporous catalysts using a physical metallurgy approach. These cost-effective, noble metal-free materials show excellent hydrogen evolution reaction performance and durability.

More Related Videos

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

11.6K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

19.9K

Related Experiment Videos

Last Updated: Oct 14, 2025

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

3.8K
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

11.6K
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

19.9K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Developing cost-effective, high-performance electrocatalysts for hydrogen production is crucial.
  • Existing core-shell nanoparticle catalysts often rely on binders, limiting their practical catalytic properties.
  • Need for advanced, binder-free electrode materials for efficient hydrogen evolution.

Purpose of the Study:

  • To design and fabricate a novel self-supported nanoporous electrocatalyst with a core-shell structure.
  • To evaluate the hydrogen evolution reaction (HER) performance of the developed catalyst.
  • To demonstrate a versatile strategy for creating advanced, cost-effective electrode materials.

Main Methods:

  • Employed a physical-metallurgy-based structural design strategy.
  • Fabricated a unique nanoporous structure with core-shell-like ligaments (Cu core/NiO shell) on a metallic glass substrate.
  • Tested the catalyst's HER performance, including overpotential, Tafel slope, and durability.

Main Results:

  • Developed a self-supported, noble metal-free catalyst with a unique nanoporous core-shell structure.
  • Achieved outstanding HER performance: 67 mV overpotential at 10 mA cm⁻², with a low Tafel slope of 40 mV dec⁻¹.
  • Demonstrated good durability of the catalyst in hydrogen evolution reactions.

Conclusions:

  • The physical metallurgy approach enables the creation of advanced, self-supported nanoporous catalysts.
  • The Cu core/NiO shell catalyst exhibits excellent HER activity and stability, outperforming traditional nanoparticle catalysts.
  • This strategy offers a new pathway for designing cost-effective electrode materials for hydrogen production.