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

12.6K
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...
12.6K

You might also read

Related Articles

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

Sort by
Same author

Structural Properties and Energy Band Alignment of Crystalline AlN Grown by Atomic Layer Deposition on Epitaxial Graphene.

Nanomaterials (Basel, Switzerland)·2026
Same author

Synergistic Effects of Mesoporous Structure and Oxygen Vacancies in SnO<sub>2</sub> for Enhanced CO<sub>2</sub> Electroreduction.

Small science·2026
Same author

Nernstian Diagnostics of Imperfect Selectivity in Naphthalene Diimide-Based Aqueous Organic Redox Flow Battery.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Manipulating Electron Structure through Dual-Interface Engineering of 3C-SiC Photoanode for Enhanced Solar Water Splitting.

Journal of the American Chemical Society·2025
Same author

Decoupling Conductivity, Heterogeneous Electron Transfer Rate, and Diffusion in Organic Molecular Electrocatalysis: Oxygen Reduction Reaction on Poly(3,4-ethylenedioxythiophene).

Small (Weinheim an der Bergstrasse, Germany)·2024
Same author

Exhaustive characterization of modified Si vacancies in 4H-SiC.

Nanophotonics (Berlin, Germany)·2024

Related Experiment Video

Updated: Sep 25, 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

3.3K

Bidirectional Hydrogen Electrocatalysis on Epitaxial Graphene.

Mikhail Vagin1, Ivan G Ivanov2, Rositsa Yakimova2

  • 1Laboratory of Organic Electronics, Department of Science and Technology (ITN), Linköping University, SE-60174 Norrköping, Sweden.

ACS Omega
|April 27, 2022
PubMed
Summary

This study explores epigraphene (EG) for hydrogen evolution and oxidation reactions, crucial for green hydrogen production. EG demonstrates high stability and unique catalytic properties due to its interaction with silicon carbide, advancing sustainable energy research.

More Related Videos

Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

12.1K
Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.4K

Related Experiment Videos

Last Updated: Sep 25, 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

3.3K
Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

12.1K
Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.4K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Sustainable Energy

Background:

  • Human activities driving climate change necessitate research into new energy resources.
  • Hydrogen is a promising green energy carrier due to its high energy density.
  • Sustainable hydrogen production relies on water electrolysis, specifically the hydrogen evolution reaction (HER).

Purpose of the Study:

  • Investigate the bidirectional electrocatalysis of HER and hydrogen oxidation reaction (HOR) on metal- and defect-free epigraphene (EG).
  • Evaluate EG as a catalyst support for graphitic materials in electrochemical applications.
  • Understand the catalytic mechanisms and stability of EG in acidic and alkaline media.

Main Methods:

  • Dynamic and steady-state electrochemical measurements were performed.
  • Experimental investigations were combined with theoretical calculations.
  • The HER and HOR activity of epigraphene (EG) on 4H silicon carbide (4H-SiC) was analyzed.

Main Results:

  • Epigraphene (EG) exhibited high stability with no signal degradation during electrochemical measurements.
  • The dominant HER pathway was identified as the Volmer-Tafel mechanism.
  • EG's reactivity was attributed to strain and electronic doping induced by the SiC substrate.

Conclusions:

  • The interaction between EG and SiC enhances catalytic activity for HER/HOR.
  • A high activation energy for O-H bond breaking correlates with a negative HER overpotential.
  • The estimated exchange current for HER/HOR on EG is valuable for evaluating graphitic catalyst systems.