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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...
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Related Experiment Video

Updated: Jun 8, 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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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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Shell-anchor-core structures for enhanced stability and catalytic oxygen reduction activity.

Gustavo E Ramirez-Caballero1, Pussana Hirunsit, Perla B Balbuena

  • 1Materials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, USA.

The Journal of Chemical Physics
|October 15, 2010
PubMed
Summary

This study introduces novel shell-anchor-core structures for improved catalyst stability and activity. Carbon-locked 3d metals prevent dissolution, enhancing oxygen reduction reactions and catalyst durability.

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

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Area of Science:

  • Materials Science
  • Computational Chemistry
  • Electrochemistry

Background:

  • Developing stable and active electrocatalysts is crucial for energy conversion technologies.
  • Surface segregation and dissolution of 3d metals in platinum-based catalysts limit their performance and durability.
  • Novel catalyst architectures are needed to overcome these limitations.

Purpose of the Study:

  • To investigate the activity and stability of shell-anchor-core structures for electrocatalysis.
  • To analyze the effect of different 3d metals (Fe, Ni, Co) in the anchor bilayer on catalyst properties.
  • To evaluate the potential of using a palladium (Pd) monolayer on the surface.

Main Methods:

  • Utilizing density functional theory (DFT) to model and evaluate catalyst properties.
  • Designing shell-anchor-core structures with a platinum (Pt) surface monolayer and a composite core.
  • Investigating the role of carbon (C) atoms in locking 3d metals within the anchor bilayer.

Main Results:

  • The M(2)C (M = Fe, Ni, Co) subsurface anchor bilayer effectively prevents 3d metal migration to the surface.
  • Modified subsurface geometry reduces surface strain, leading to more moderate adsorption of oxygenated species.
  • Enhanced resistance against dissolution and improved oxygen reduction activity were observed.

Conclusions:

  • Shell-anchor-core structures with carbon-locked 3d metals offer a promising strategy for durable and active electrocatalysts.
  • The M(2)C anchor bilayer enhances catalyst stability by preventing metal dissolution.
  • These findings suggest potential for improved oxygen reduction reaction performance and delayed water oxidation onset.