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

Redox Equilibria: Overview01:23

Redox Equilibria: Overview

522
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...
522
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

20.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.6K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

6.1K
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...
6.1K
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

240
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
240
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

64.3K
Oxidation–Reduction Reactions
64.3K
Redox Reactions01:24

Redox Reactions

55.5K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
55.5K

You might also read

Related Articles

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

Sort by
Same author

Inherently Conducting Polymeric Materials from Conjugated Polyisoprene-Based Rubbers.

ACS applied materials & interfaces·2026
Same author

Transforming disorder in the design of advanced high-entropy oxide electrocatalysts for zinc-air batteries.

Nature communications·2026
Same author

Thousand-hour salt precipitation-free CO<sub>2</sub>-to-ethylene electrosynthesis at high current densities.

Nature communications·2025
Same author

Copper-stabilized bismuth subcarbonate electrocatalysts for durable large-scale formate production at kilowatt power.

Nature communications·2025
Same author

Recent Developments in Solid-State Electrolytes for Advanced Energy Storage Devices.

ACS nano·2025
Same author

Carbon catalysts for CO<sub>2</sub> conversion: From carbon emissions to zero-carbon solutions.

Science advances·2025

Related Experiment Video

Updated: Jun 5, 2025

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

7.7K

Second-Shell Coordination Environment Modulation for MnN4 Active Sites by Oxygen Doping to Boost Oxygen Reduction

Xuanni Lin1, Dong Liu1, Lei Shi2

  • 1State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.

Small (Weinheim an Der Bergstrasse, Germany)
|December 13, 2024
PubMed
Summary

Manganese single-atom catalysts (SACs) with oxygen doping in their second coordination shell show enhanced oxygen reduction reaction (ORR) activity and stability. This breakthrough offers a promising non-precious metal alternative for energy applications.

Keywords:
Zn‐air batteryoxygen dopingoxygen reduction reactionsecond‐shell coordination environment modulationstable operation

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

3.5K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

1.9K

Related Experiment Videos

Last Updated: Jun 5, 2025

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

7.7K
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

3.5K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

1.9K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Manganese-based single-atom catalysts (SACs) are promising non-precious metal catalysts for the oxygen reduction reaction (ORR).
  • Existing manganese SACs often exhibit unsatisfactory ORR activity, and the structure-activity relationship, particularly concerning the second coordination shell, remains unclear.
  • Iron-based catalysts, while active, suffer from Fenton-like activity, and nickel/cobalt catalysts are less earth-abundant.

Purpose of the Study:

  • To develop a highly efficient and stable manganese SAC for ORR by modifying its second coordination shell.
  • To elucidate the structure-activity relationship by investigating the impact of oxygen doping in the second coordination shell of Mn SACs.
  • To evaluate the performance of the developed catalyst in zinc-air batteries (ZABs).

Main Methods:

  • Synthesis of a manganese SAC with oxygen doping in the second coordination shell (MnSAC-O/C).
  • Characterization using X-ray absorption spectroscopy (XAS) to verify oxygen doping and analyze the local coordination environment.
  • Electrochemical testing for ORR performance and long-term stability in zinc-air batteries.
  • Theoretical calculations (e.g., DFT) to understand the electronic structure and reaction mechanism.

Main Results:

  • Successful synthesis of MnSAC-O/C with verified oxygen doping in the second coordination shell, inducing local distortion around the Mn center.
  • MnSAC-O/C demonstrated superior ORR activity with a half-wave potential of 0.898 V, outperforming undoped MnSAC-C, commercial Pt/C, and other non-noble metal SACs.
  • MnSAC-O/C based ZABs exhibited excellent durability, operating stably for over 930 hours.
  • Theoretical calculations revealed that oxygen doping modifies the charge distribution of the MnN4 active site and facilitates OH* desorption.

Conclusions:

  • Oxygen doping in the second coordination shell is an effective strategy to enhance the ORR performance of Mn SACs.
  • The modified electronic structure and improved OH* desorption kinetics contribute to the superior activity and stability of MnSAC-O/C.
  • MnSAC-O/C represents a highly promising non-precious metal catalyst for efficient and durable energy conversion devices like ZABs.