where k is the X-ray wavelength; b is the full peak width in radians
at half-height and h is Bragg’s angle. The mean size of the nanoparticles
is calculated as 20 ± 6, 16 ± 1 and 9 ± 1 for 10:1, 20:1 and 30:1
respectively. These values show quite good agreement with TEM results
for the silver nanoparticles, especially for 10:1 and 20:1 ratios.
The XRD size was estimated small for the 30:1 ratio which is most
probably due to the broad diffraction peaks.