Platinum nanoparticles are usually in the form of a suspension or colloid of sub-micrometre-sized particles of platinum in a fluid, usually water. A colloid is technically defined as a stable dispersion of particles in a fluid medium (liquid or gas).
Platinum nanoparticles can be made with sizes between about 2 and 20 nanometres (nm), depending on reaction conditions. Trillions of platinum nanoparticles are suspended in the brownish red or black colored colloidal solution. Nanoparticles come in wide variety of shapes including spheres, rods, cubes and tetrahedra.
Due to the antioxidant properties of the platinum nanoparticles, they are the subject of substantial research with potential applications in a wide variety of areas, including nanotechnology, catalysis, medicine and the synthesis of novel materials with unique properties.
Read more about Platinum Nanoparticles: Synthesis, Biological Effects, See Also
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