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

Catalysis02:50

Catalysis

27.0K
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.
27.0K
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
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

564
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
564
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

65.0K
Oxidation–Reduction Reactions
65.0K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

6.7K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
6.7K
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

You might also read

Related Articles

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

Sort by
Same author

Phase-Dependent MoS<sub>2</sub> Nanosheets-Embedded Urinary Catheter for Advanced Photothermal Sterilization.

International journal of molecular sciences·2026
Same author

Flow-Based <i>In Situ</i> Synthesis of Covalent Organic Framework Thin Films and Liquid-Phase Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D) Analysis of Adsorption Kinetics.

ACS applied materials & interfaces·2026
Same author

Revisiting necessity of high-entropy electrocatalysts.

Nature communications·2026
Same author

Making Morphology Meaningful: Tracking Dynamic Catalyst Evolution under Working Conditions.

ACS applied materials & interfaces·2026
Same author

Multifunctional plasmonic gold nanoisland films for enhanced cell theranostics through photothermal therapy and surface-enhanced Raman scattering detection.

Nanomedicine (London, England)·2026
Same author

Defect-Rich Gas-Solution Photocatalytic Systems for Nitrogen Reduction Reactions: Enabling Energy and Carbon Reductions.

ACS omega·2026

Related Experiment Video

Updated: Jul 9, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

18.2K

Reversibly Adapting Configuration in Atomic Catalysts Enables Efficient Oxygen Electroreduction.

Hui-Ying Tan1, Sheng-Chih Lin1, Jiali Wang1

  • 1Department of Chemistry and Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei 10617, Taiwan.

Journal of the American Chemical Society
|December 1, 2023
PubMed
Summary

Single-atom catalysts (SACs) with reversible Cu-N configurations on g-C3N4 show excellent oxygen reduction reaction (ORR) activity. Irreversible changes in ZIF-derived SACs hinder their ORR performance.

More Related Videos

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.1K

Related Experiment Videos

Last Updated: Jul 9, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

18.2K
Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

7.8K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

22.1K

Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Single-atom catalysts (SACs) with M-N-C moieties are promising for oxygen reduction reaction (ORR).
  • The dynamic M-N configuration of SACs under applied potentials is poorly understood.
  • Microstructural interface (MSI) plays a critical role in SACs' stability and performance.

Purpose of the Study:

  • To investigate the dynamic configurations of copper (Cu) SACs on g-C3N4 and zeolitic imidazolate framework (ZIF) substrates under ORR conditions.
  • To elucidate the influence of substrate-derived microstructural interface on Cu SACs' structural dynamics and ORR activity.
  • To provide insights into the potential-driven characteristics of atomic electrocatalysts.

Main Methods:

  • Operando time-resolved X-ray absorption spectroscopy (TR-XAS).
  • Operando Raman spectroscopy.
  • Electrochemical measurements (ORR).

Main Results:

  • Cu SACs on g-C3N4 exhibit reversible Cu-N configurations, leading to excellent ORR activity.
  • ZIF-derived Cu SACs show irreversible structural changes and unstable Cu-N bonds, resulting in poor ORR performance.
  • Operando TR-XAS and Raman confirmed the reversible adaptation of Cu-N configuration in g-C3N4 supported SACs.

Conclusions:

  • The dynamic M-N configuration is crucial for SACs' ORR performance.
  • Reversible adaptation of the Cu-N configuration is key to high ORR activity.
  • This study offers a systematic approach to understanding and designing advanced atomic electrocatalysts.