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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: Apr 18, 2026

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

Platinum-carbide interactions: core-shells for catalytic use.

J L R Yates¹, G H Spikes, G Jones

¹Department of Chemistry, University College London, 20 Gordon Street, London, WC1H OAJ, UK.

Physical Chemistry Chemical Physics : PCCP

|January 10, 2015

Summary

Tungsten carbide (WC) and silicon carbide (SiC) show promise for supporting platinum (Pt) overlayers in core-shell catalysts. Certain Pt-WC surfaces may enhance oxygen reduction reaction (ORR) activity.

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A Salt-Templated Synthesis Method for Porous Platinum-based Macrobeams and Macrotubes

A Salt-Templated Synthesis Method for Porous Platinum-based Macrobeams and Macrotubes

Published on: May 18, 2020

Area of Science:

Materials Science
Surface Chemistry
Computational Chemistry

Background:

Core-shell nanostructures are crucial for advanced catalysts.
Carbides are explored as support materials for platinum-based catalysts.
Understanding metal-support interactions is key for optimizing catalytic performance.

Purpose of the Study:

To investigate the adsorption properties of platinum overlayers on various carbide surfaces.
To evaluate the potential of carbides (TiC, NbC, TaC, WC, SiC) as core components in core-shell catalyst designs.
To assess the influence of carbide supports on oxygen binding and its implications for the oxygen reduction reaction (ORR).

Main Methods:

Density Functional Theory (DFT) calculations were employed.
Adsorption characteristics of platinum on different carbide surfaces were computed.
The effect of carbide supports on oxygen binding energies was analyzed.

Main Results:

Tungsten carbide (WC) and silicon carbide (SiC) demonstrated favorable Pt overlayer support across all surfaces.
Platinum adsorption on fcc (111) carbide surfaces is significantly influenced by transition metal surface resonances (TMSRs).
Fcc (100) carbide surfaces were found to be unfavorable for Pt adsorption.
Several Pt-WC surfaces exhibited reduced oxygen adsorption energies, indicating potential for improved ORR activity.

Conclusions:

WC and SiC are promising candidates for full platinum encapsulation in core-shell catalysts.
The electronic structure of carbide surfaces, particularly TMSRs, dictates platinum adsorption behavior.
Pt-WC interfaces show potential for enhancing or maintaining oxygen reduction reaction activity compared to current nanoparticulate platinum catalysts.