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

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
Catalysis02:50

Catalysis

26.9K
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.
26.9K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

12.0K
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...
12.0K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.3K
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...
3.3K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

250
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
250
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation01:28

Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

4.6K
Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
4.6K

You might also read

Related Articles

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

Sort by
Same author

Direct Visualization and Regulation of Interfacial Ion Concentration Layer at Zinc Metal Interfaces via an Ion-Buffering Artificial Solid Electrolyte Interphase.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Engineered <i>Escherichia coli</i> Modified with Carbon Quantum Dots as a High-Performance Cathode Catalyst for Microbial Fuel Cells.

Molecules (Basel, Switzerland)·2026
Same author

Stabilizing Dual-Band Redox Process via Bidirectional Regulation Term in High-Voltage Sodium Layered Oxide Cathodes.

Angewandte Chemie (International ed. in English)·2026
Same author

A Facile Immersion Strategy for Molybdate-Modified Co/Co(OH)<sub>2</sub>@Cu Nanowires as High-Efficiency and Durable Electrocatalysts for Alkaline Hydrogen Evolution.

Chemistry, an Asian journal·2026
Same author

Decoupling-Facilitated Mass-Charge Transfer via Dual-Interface Engineering for Efficient CO<sub>2</sub> Electrolysis.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Iodide Anion Anchoring by Silver Nanoparticles Enables Shuttle-Free Zinc-Iodine Batteries.

Angewandte Chemie (International ed. in English)·2026

Related Experiment Video

Updated: Jul 7, 2025

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

2.9K

Integrated PtCo-Hierarchical Carbon Matrix Electrocatalyst for Efficient Hydrogen Evolution Reaction.

Shuxuan Liu1, Wen Cao1, Jie Wu1

  • 1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, China.

ACS Applied Materials & Interfaces
|December 27, 2023
PubMed
Summary

This study introduces a novel platinum-cobalt alloy catalyst on a hierarchical carbon matrix for efficient hydrogen evolution reaction (HER). The Pt3Co@NCNTs catalyst demonstrates superior performance and durability compared to commercial platinum catalysts.

Keywords:
Co migration strategyPtxCoy alloy nanoparticleselectronic regulation effecthierarchical hollow structurehydrogen evolution reaction

More Related Videos

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

3.6K
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

11.5K

Related Experiment Videos

Last Updated: Jul 7, 2025

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

2.9K
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

3.6K
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

11.5K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Platinum-based catalysts are essential for clean hydrogen production.
  • High cost and limited stability of platinum hinder widespread application.

Purpose of the Study:

  • To develop an integrated platinum-cobalt alloy catalyst on a hierarchical carbon matrix for efficient hydrogen evolution reaction (HER).
  • To investigate the catalytic performance and durability of the developed catalyst compared to commercial alternatives.

Main Methods:

  • Synthesis of Pt-Co alloy nanoparticles integrated with a hierarchical carbon matrix (Pt/Co@NCNTs).
  • Utilized a thermally driven cobalt migration strategy.
  • Evaluated catalytic performance using electrochemical methods.
  • Employed Density Functional Theory (DFT) for mechanistic insights.

Main Results:

  • The Pt3Co@NCNTs catalyst exhibited superior HER activity and durability over commercial Pt/C.
  • Achieved low overpotentials of 21 mV (alkaline) and 45 mV (acidic) at 10 mA cm⁻².
  • DFT confirmed electronic modulation and optimized d-band center due to Pt-Co interaction.

Conclusions:

  • The Pt3Co@NCNTs catalyst offers an efficient and stable alternative for hydrogen evolution.
  • The integrated hierarchical structure and electronic effects enhance catalytic performance.
  • This approach provides a pathway for developing advanced electrocatalysts for clean energy applications.