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Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
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A genomic characterisation of monometallic nanoparticles
Kevin Rossi1, Gian Giacomo Asara, Francesca Baletto
1Physics Department, King's College London, Strand, WC2R 2LS, UK. francesca.baletto@kcl.ac.uk.
Physical Chemistry Chemical Physics : PCCP
|November 29, 2018
Summary
We developed a "geometrical genome" to analyze nanoparticle properties. This method identified specific platinum nanoparticles as ideal for oxygen electro-reduction, confirming experimental findings.
Area of Science:
- Materials Science
- Nanotechnology
- Computational Chemistry
Background:
- Nanoparticle size and shape critically influence chemo-physical properties.
- Understanding adsorption sites is key to optimizing nanocatalyst performance.
- Morphological diversity and structural rearrangements impact catalytic activity.
Purpose of the Study:
- To extend geometrical descriptors for sequencing a genome of monometallic nanoparticles.
- To catalogue and quantify adsorption sites based on nanoparticle size and shape.
- To elucidate the effects of morphological diversity and structural rearrangements on nanocatalyst activity.
Main Methods:
- Utilizing the generalized coordination number as a geometrical descriptor.
- Sequencing a geometrical genome for nanoparticles up to 10 nm in diameter.
- Screening archetypal shapes within the geometrical genome.
Main Results:
- The geometrical genome successfully distinguishes, catalogues, and counts adsorption sites.
- The analysis revealed size and shape dependence of available adsorption sites.
- Forecasted optimal platinum (Pt) nanoparticles for oxygen electro-reduction.
Conclusions:
- Geometrical genomes provide a powerful tool for understanding nanoparticle properties.
- Specific Pt stellated twinned nanoparticles are predicted as highly effective for electro-reduction.
- Findings align with existing experimental data on nanocatalyst activity.
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