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

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

20.7K
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...
20.7K
Valence Bond Theory02:42

Valence Bond Theory

8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.3K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.3K
Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

34.7K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
34.7K
Covalent Bonding and Lewis Structures02:46

Covalent Bonding and Lewis Structures

49.0K
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
49.0K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

970
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
970

You might also read

Related Articles

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

Sort by
Same author

CXCL10/SLC11A1 Axis Exacerbates Septic Liver Injury by Regulating Neutrophil Extracellular Traps Formation to Drive Macrophage Pro‑Inflammatory Polarization.

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

Modulating the interfacial solvation structure to promote hydroxyl migration for alkaline hydrogen oxidation.

Nature communications·2026
Same author

Combined exposure to flumethrin and hexaconazole induces synergistic oxidative, metabolic, and immune dysregulation in honeybees.

Journal of hazardous materials·2026
Same author

Multiscale cathode design for high-temperature proton exchange membrane fuel cells.

Chemical Society reviews·2026
Same author

Predictors, sources, and health risks of environmental antibiotic exposure in Chinese pregnant women.

Environmental pollution (Barking, Essex : 1987)·2026
Same author

Partially Reduced PtO Promoted Activation of Oxygen and Ammonia for Ambient Photocatalytic Ammoxidation.

Journal of the American Chemical Society·2026

Related Experiment Video

Updated: Jun 18, 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

18.1K

Constructing Co4(SO4)4 Clusters within Metal-Organic Frameworks for Efficient Oxygen Electrocatalysis.

Zuozhong Liang1, Guojun Zhou1, Huang Tan2

  • 1Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.

Advanced Materials (Deerfield Beach, Fla.)
|August 3, 2024
PubMed
Summary

Researchers synthesized novel cobalt-sulfate clusters within metal-organic frameworks (MOFs) for efficient oxygen electrocatalysis. These Co4(SO4)4 clusters demonstrate significant activity in both oxygen evolution (OER) and oxygen reduction (ORR) reactions.

Keywords:
Co4(SO4)4 clustersmetal porphyrinmetal–organic frameworkoxygen evolution reactionoxygen reduction reaction

More Related Videos

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

2.5K
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 18, 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

18.1K
Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

2.5K
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:

  • Multinuclear metal clusters are promising catalysts for multi-electron transfer reactions.
  • Synthesizing active metal clusters for catalysis remains a significant challenge.
  • Metal-organic frameworks (MOFs) offer versatile platforms for constructing advanced catalytic materials.

Purpose of the Study:

  • To construct an unprecedented Co4(SO4)4 cluster within porphyrin-based MOFs.
  • To investigate the electrocatalytic performance of these Co4(SO4)4 clusters for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR).
  • To elucidate the role of the Co4(SO4)4 cluster and the synergistic effects of cobalt atoms in oxygen electrocatalysis.

Main Methods:

  • Solvothermal synthesis of Co4-M-MOFs (M = Co, Cu, Zn) using CoII sulfate and metalloporphyrin precursors.
  • Crystallographic studies to determine the framework structure and cluster coordination.
  • Electrocatalytic measurements (OER and ORR) to evaluate catalytic activity.
  • Theoretical calculations to understand the reaction mechanism and synergistic effects.

Main Results:

  • Successfully synthesized Co4-M-MOFs with a uniform framework structure featuring Co4(SO4)4 clusters linked by metalloporphyrin units.
  • All synthesized Co4-M-MOFs exhibited electrocatalytic activity for both OER and ORR.
  • Co4-Co-MOF demonstrated superior performance, achieving a 10 mA cm-2 OER current density at 357 mV overpotential and an ORR half-wave potential of 0.83 V vs RHE.
  • Theoretical studies revealed a synergistic effect between proximal cobalt atoms in the Co4(SO4)4 cluster, facilitating O-O bond formation during OER.

Conclusions:

  • The construction of Co4(SO4)4 clusters within MOF frameworks is a viable strategy for developing efficient oxygen electrocatalysts.
  • The Co4(SO4)4 cluster itself is the active site for oxygen electrocatalysis.
  • Synergistic interactions between cobalt atoms within the cluster play a crucial role in enhancing OER activity.