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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate02:21

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.
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.

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Related Experiment Video

Updated: May 13, 2026

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

Ordered mesoporous cobalt oxide as highly efficient oxygen evolution catalyst.

Jonathan Rosen1, Gregory S Hutchings, Feng Jiao

  • 1Center for Catalytic Science & Technology, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA.

Journal of the American Chemical Society
|March 2, 2013
PubMed
Summary
This summary is machine-generated.

Developing earth-abundant catalysts for solar fuel is key. This study created a highly porous cobalt oxide catalyst with a large surface area, significantly boosting oxygen evolution activity for efficient solar fuel production.

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Last Updated: May 13, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

Area of Science:

  • Catalysis
  • Materials Science
  • Renewable Energy

Background:

  • Efficient oxygen evolution catalysts are vital for solar fuel production.
  • Earth-abundant element-based catalysts are sought for mass production.

Purpose of the Study:

  • To fabricate a mesoporous cobalt oxide catalyst with an ultrahigh surface area.
  • To enhance oxygen evolution activity using earth-abundant elements.

Main Methods:

  • Mg substitution in mesoporous Co3O4 spinel.
  • Mg-selective leaching to create porosity and defects.
  • Testing oxygen evolution in visible-light and chemical systems.

Main Results:

  • Achieved ultrahigh surface area (up to 250 m²/g).
  • Created a highly porous cobalt oxide with spinel defects.
  • Demonstrated high oxygen evolution activity, with a TOF of ~2.2 × 10⁻³ s⁻¹ per Co atom in acid.

Conclusions:

  • The novel mesoporous cobalt oxide catalyst significantly outperforms traditional ones.
  • This material shows great promise for efficient solar fuel production.
  • Defect engineering in porous oxides is a viable strategy for catalysis.