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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

48
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...
48
Catalysis02:50

Catalysis

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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.
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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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...
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Related Experiment Video

Updated: Mar 10, 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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Ruthenium/Graphene-like Layered Carbon Composite as an Efficient Hydrogen Evolution Reaction Electrocatalyst.

Zhe Chen1,2, Jinfeng Lu2, Yuejie Ai1

  • 1School of Environmental and Chemical Engineering, North China Electric Power University , Beijing 102206, China.

ACS Applied Materials & Interfaces
|December 15, 2016
PubMed
Summary

Researchers developed a new graphene-like layered carbon (GLC) material to support ruthenium nanoparticles for efficient hydrogen evolution reaction (HER) catalysis. This novel Ru/GLC catalyst demonstrates high activity and stability, offering a cost-effective alternative to platinum for future energy applications.

Keywords:
electrocatalysisgraphene-likehydrogen evolution reaction (HER)rutheniumsupercritical fluid

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Efficient water splitting is crucial for modern energy devices.
  • Developing electrocatalysts with platinum-like activity and stability remains a significant challenge.

Purpose of the Study:

  • To synthesize a novel graphene-like layered carbon (GLC) material.
  • To utilize GLC as a support for ultrasmall ruthenium nanoparticles (Ru).
  • To evaluate the catalytic performance of the resulting Ru/GLC for the hydrogen evolution reaction (HER).

Main Methods:

  • Facile synthesis of GLC from a layered silicate template.
  • Loading ultrasmall Ru nanoparticles onto GLC in supercritical water.
  • Electrocatalytic testing of Ru/GLC for HER in sulfuric acid solution.

Main Results:

  • GLC exhibited a layered structure facilitating uniform dispersion of Ru nanoparticles (up to 62 wt %).
  • The Ru/GLC catalyst showed an exceptionally low onset potential (3 mV) and a small Tafel slope (46 mV/decade) for HER.
  • The catalyst's performance is comparable to transition-metal dichalcogenides and selenides.

Conclusions:

  • Ru/GLC is a highly active and stable electrocatalyst for HER.
  • The cost-effectiveness of ruthenium compared to platinum makes Ru/GLC a promising candidate for future energy applications.
  • This study presents a viable strategy for developing advanced HER catalysts.