Table 5: Characteristic of the ZnO NPs samples.

SampleSpecific surface area by gas adsorption, (m2/g)Skeleton density by gas pycnometry, (g/cm3)Average particle size from SSA BET, (nm)Average crystallite size from Nanopowder XRD Processor Demo, (nm)Average crystallite size, Scherrer’s formula, based on XRD, , (nm)Ratio of average crystallite size, Scherrer’s formula, Average particle size from TEM, (nm)

ZnO (1%)46 ± 15.29 ± 0.0825 ± 122 ± 718, 231.27819.8 ± 0.3
ZnO (1.5%)39 ± 15.35 ± 0.0829 ± 126 ± 823, 291.26124.6 ± 0.3
ZnO (2%)36 ± 15.37 ± 0.0531 ± 129 ± 1024, 331.37524.8 ± 0.3
ZnO (3%)29 ± 15.40 ± 0.0338 ± 235 ± 1230, 391.30028.1 ± 0.3
ZnO (4%)22 ± 15.43 ± 0.0750 ± 341 ± 1433, 481.45565.7 ± 0.3