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: 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
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.4K
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...
3.4K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

8.2K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
8.2K
The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

10.6K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.6K
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation01:28

Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

4.9K
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...
4.9K
Catalysis02:50

Catalysis

27.7K
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.
27.7K

You might also read

Related Articles

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

Sort by
Same author

Timing of High-Risk Asthma Specialist Enrollment and Severe Asthma Exacerbations in Children.

The journal of allergy and clinical immunology. In practice·2026
Same author

Optimizing scalable approaches for early detection of cognitive impairment in primary care.

Alzheimer's & dementia (Amsterdam, Netherlands)·2026
Same author

Effect of an electronic health record-integrated machine learning asthma risk marker on pediatrician prognostic accuracy during preschool age: a pilot randomized clinical trial.

Scientific reports·2026
Same author

Early initiation of inhaled corticosteroid-long-acting β<sub>2</sub>-agonist therapy and reduction of severe asthma exacerbations in high-risk preschool children: A longitudinal real-world cohort study.

Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology·2026
Same author

Toxicological insights into formaldehyde-induced copd: a study on gene expression and molecular interactions.

Cytotechnology·2026
Same author

Highly Reversible Zinc Anode Enabled by a Thiourea-Derived Protective Layer for Alkaline Zinc Batteries.

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

Related Experiment Video

Updated: Sep 18, 2025

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.6K

Light-Driven Chemical Cascade Reduces Barriers to Hydrogen Production.

Venugopala Rao Battula1, Gabriel Mark1, Muhammad Saad Naeem2,3

  • 1Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel.

Journal of the American Chemical Society
|June 20, 2025
PubMed
Summary

This study introduces a new photocatalysis method for sustainable hydrogen and formic acid production. It bypasses expensive noble metals and specific semiconductor needs, making the process more economical and practical.

More Related Videos

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.5K
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

Related Experiment Videos

Last Updated: Sep 18, 2025

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.6K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.5K
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

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Sustainable Chemistry

Background:

  • Traditional photocatalysis for hydrogen and chemical production relies on specific semiconductor properties and costly noble metal cocatalysts.
  • These limitations restrict material availability and increase the overall expense of sustainable production methods.

Purpose of the Study:

  • To develop an alternative, cost-effective photocatalytic pathway for producing hydrogen and formic acid.
  • To overcome the constraints of traditional photocatalysis by eliminating the need for specific semiconductor band edge properties and noble metal cocatalysts.

Main Methods:

  • A cascade photocatalytic process was designed, utilizing oxygen and methanol as reactants.
  • The process involves the in-situ generation of hydrogen peroxide and formaldehyde, which subsequently react to produce hydrogen and formic acid.
  • Two limited direct photocatalysts, polymeric carbon nitride and tungsten oxide, were employed to demonstrate the method's viability.

Main Results:

  • The proposed photocatalytic pathway successfully produced hydrogen and formic acid using polymeric carbon nitride and tungsten oxide.
  • The method demonstrated flexibility in semiconductor material selection, accommodating materials with unsuitable conduction-band properties.
  • Significant advantages were observed, including reduced energy consumption, lower environmental impact, and elimination of noble metal costs.

Conclusions:

  • This novel approach expands the range of suitable semiconductor materials for efficient photocatalytic hydrogen production.
  • The developed method offers a more economical and practical solution for sustainable hydrogen and chemical synthesis.
  • The findings pave the way for broader adoption of photocatalysis in green chemistry applications.