For Nanomaterials Surface to Volume Ratio Is?

Nanoparticles exhibit unique properties due to their high surface area to volume ratio. A spherical particle has a diameter (D) of 100nm. This gives an approximate surface area to volume ratio of >107:1 which is significantly larger than a macro sized particle.

Do nanoparticles have a small surface area to volume ratio?

Nanoparticles have very large surface area to volume ratios compared to the same material in bulk, as powders, lumps or sheets. For a solid, the smaller its particles, the greater the surface area to volume ratio.

How the surface to volume ratio of a spherical nanoparticle varies with its radius R?

It means that the surface area to volume ration increases with the decrease in radius of the sphere and vice versa. Therefore nanoparticles have a much greater surface area per unit volume compared with the larger particles. ...