Alloy nanoparticles, process for their preparation and use thereof
AssigneePolyvalor, SociéTé En Commandite
InventorsDavid Rioux, Michel Meunier
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Abstract
There is provided a process for preparing alloy nanoparticles having a desired size. The process comprises a combination of co-reduction of metal salts in the presence of a reducing agent, and multi-step seeded growth synthesis. Also provided is a material which comprises alloy nanoparticles made of at least two metals. A mean diameter of the particles of the material is between about 30 nm and 200 nm as measured by transmission electron microscopy (TEM), and the particles have a coefficient of variation smaller than about 15%.
Claims7
A material comprising alloy nanoparticles made of at least two metals, wherein:
- a core of each alloy nanoparticle is made of Au and a shell of the alloy nanoparticle is made of the Au—Ag alloy, wherein the shell is grown around the core which is constituted of a nanoparticle of an initial seed;
- a mean diameter of the seed nanoparticles is about 15 nm and a mean diameter of the alloy nanoparticles is between about 30 nm and 200 nm as measured by transmission electron microscopy (TEM);
- and
- the alloy nanoparticles have a coefficient of variation smaller than about 15%.
Dependencies are inferred from the claim text.