Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Reduction of Alkenes: Catalytic Hydrogenation

Reduction of Alkenes: Catalytic Hydrogenation

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...

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

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.

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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...

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.

Catalysis

Catalysis

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.

Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation

Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation

Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.

You might also read

Related Articles

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

Sort by

Same author

Interface-Defect-Rich In-Mo Codoped Pd Metallene for Enhanced C1 Selectivity During Electrocatalytic Ethanol Oxidation.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Noncoordinating Substituent Modulation Strategy Lights Up Uranyl Organic Complexes for Sensitive X-ray Detection and Imaging.

Inorganic chemistry·2026

Same author

Dual-Site Synergistic Ultrathin Pt-Based High-Entropy Alloy Nanosheets Enabling High-Performance Industrial Alkaline HER.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Exploring the molecular mechanism of nano-selenium against IHNV in rainbow trout: in vivo and in vitro studies.

Fish & shellfish immunology·2026

Same author

Corrigendum to "Combined transcriptomics and metabolomics to reveal the effects of copper exposure on the liver of rainbow trout (Oncorhynchus mykiss)" [Ecotoxicol. Environ. Saf. 2024, 284, 116996].

Ecotoxicology and environmental safety·2026

Same author

Epitaxial Stabilization of Ultrasmall Cu Nanoparticles With High-Energy {110} Facets on Ti<sub>3</sub>C<sub>2</sub> MXene for Efficient CO<sub>2</sub>-to-Acetate Electrocatalysis.

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

Search research articles

Related Experiment Video

Updated: Sep 17, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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

Stable Tensile-Strained Pt Single Atomic Layer Catalysts on α-MoC for Efficient Alkaline Hydrogen Evolution.

Yaohui Zhao^1,2, Jiapeng Huang^1,2, Ke Zhang¹

¹Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.

|June 27, 2025

Summary

Researchers developed a novel platinum single-atom-layer (Pt SAL) catalyst on α-MoC substrates using a galvanic replacement strategy. This advanced catalyst offers superior hydrogen evolution reaction (HER) performance and durability for electrochemical energy applications.

Keywords:

Pt single-atom-layer catalysts electrocatalysis galvanic replacement reaction hydrogen evolution reaction strong metal−support interaction

More Related Videos

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

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

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Related Experiment Videos

Last Updated: Sep 17, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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

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

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

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

Developing efficient and cost-effective catalysts is crucial for electrochemical energy storage and conversion.
Current methods struggle with atomically efficient platinum (Pt) monolayer deposition on nonprecious metals, limiting Pt utilization.

Purpose of the Study:

To synthesize tensile-strained platinum single-atom-layer (Pt SAL) catalysts on α-MoC substrates.
To achieve nearly 100% atomic utilization efficiency for cost-effective catalyst design.
To enhance performance and durability in electrochemical energy conversion, specifically for the hydrogen evolution reaction (HER).

Main Methods:

Galvanic replacement strategy for synthesizing Pt SAL on α-MoC.
Density functional theory (DFT) calculations to investigate interfacial bonding and stability.
In situ Raman spectroscopy to study dynamic interfacial water restructuring.

Main Results:

Pt SAL catalysts achieved nearly 100% atomic utilization efficiency and enabled cooperative catalysis.
Demonstrated superior HER performance with a mass activity of 1.71 A mg_Pt^-1 at 50 mV overpotential, outperforming commercial Pt/C and single-atom catalysts.
Exhibited remarkable stability with negligible activity decay after 10,000 cycles, attributed to strong Pt-Mo interfacial bonding.

Conclusions:

The galvanic replacement strategy provides a versatile approach for synthesizing noble metal single-atom-layer (SAL) catalysts.
Pt SAL/α-MoC catalysts show significant potential for high-performance heterogeneous catalysis and advancing electrochemical energy technologies.
Optimized reaction energetics and dynamic interfacial water restructuring contribute to enhanced catalytic kinetics and stability.