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Related Concept Videos

Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
Catalysis02:50

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.
Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
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...
Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids01:02

Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids

Carboxylic acids, upon heating, undergo a decarboxylation reaction by releasing carbon dioxide gas. Monocarboxylic acids do not undergo decarboxylation easily. However, a silver salt of carboxylic acid reacts with bromine or iodine under high temperature to release carbon dioxide gas and forms halide with one less carbon. This reaction is called the Hunsdiecker reaction.
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 21, 2026

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
07:08

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light

Published on: June 12, 2019

Splitting CO2 into CO and O2 by a single catalyst.

Zuofeng Chen1, Javier J Concepcion, M Kyle Brennaman

  • 1Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.

Proceedings of the National Academy of Sciences of the United States of America
|June 12, 2012
PubMed
Summary

This study introduces a robust ruthenium metal complex as a single electrocatalyst for splitting carbon dioxide (CO2) into carbon monoxide (CO) and oxygen (O2). This advancement offers a promising pathway for efficient CO2 utilization and conversion.

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

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Last Updated: May 21, 2026

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
07:08

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Published on: June 12, 2019

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
07:36

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

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

Area of Science:

  • Inorganic Chemistry
  • Electrochemistry
  • Catalysis

Background:

  • Metal complexes are crucial for catalytic processes.
  • Water oxidation and CO2 reduction are key reactions for energy conversion.
  • Developing efficient single-site catalysts is a significant challenge.

Purpose of the Study:

  • To investigate the use of a specific ruthenium metal complex, [(tpy)(Mebim-py)Ru(II)(S)](2+), as a single electrocatalyst.
  • To demonstrate the simultaneous electrocatalytic splitting of carbon dioxide (CO2) into carbon monoxide (CO) and oxygen (O2).

Main Methods:

  • Electrochemical synthesis and characterization of the ruthenium complex.
  • Electrocatalytic experiments in a two-compartment electrochemical cell.
  • Spectroscopic and electrochemical analyses to confirm reaction products and mechanism.

Main Results:

  • The ruthenium complex [(tpy)(Mebim-py)Ru(II)(S)](2+) demonstrated robust and reactive electrocatalytic activity.
  • Successful splitting of CO2 into CO and O2 was achieved using this single catalyst.
  • The catalyst showed efficiency in both water oxidation and CO2 reduction pathways.

Conclusions:

  • The described ruthenium complex serves as an effective single electrocatalyst for CO2 splitting.
  • This work presents a novel approach for CO2 conversion into valuable products.
  • The catalyst's dual functionality in water oxidation and CO2 reduction highlights its potential in sustainable energy applications.