(b) (i) In a dynamic light scattering experiment, the Ag nanoparticles were shown
to have a diffusion constant of 4.8 imes 10^(-11)m^(2)s^(-1) in water (viscosity =8.9 imes
10^(-4)Pas ) at 298K, and a polydispersity index value of 1.1 . Use this
information to:
a) calculate the hydrodynamic radius;
b) discuss the size distribution of the nanoparticle sample prepared by this
reaction.
(ii) Would you expect to obtain the same value for the nanoparticle radius using
transmission electron microscopy? Give reasons for your answer.
(q) (i)
In a dynamic light scattering experiment, the Ag nanoparticles were shown
to have a diffusion constant of 4.8 x 10-11 m2 s-1 in water (viscosity = 8.9 x
10-4 Pa s) at 298 K, and a polydispersity index value of 1.1. Use this
information to:
a) calculate the hydrodynamic radius;
b) discuss the size distribution of the nanoparticle sample prepared by this
reaction.
(i)
Would you expect to obtain the same value for the nanoparticle radius using
transmission electron microscopy? Give reasons for your answer.