Effect of Water Content in Ethylene Glycol Solvent on the Size of ZnO Nanoparticles Prepared Using Microwave Solvothermal Synthesis

Table 5

Characteristic of the ZnO NPs samples.

Sample	Specific surface area by gas adsorption, (m^2/g)	Skeleton density by gas pycnometry, (g/cm^3)	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 ± 1	5.29 ± 0.08	25 ± 1	22 ± 7	18, 23	1.278	19.8 ± 0.3
ZnO (1.5%)	39 ± 1	5.35 ± 0.08	29 ± 1	26 ± 8	23, 29	1.261	24.6 ± 0.3
ZnO (2%)	36 ± 1	5.37 ± 0.05	31 ± 1	29 ± 10	24, 33	1.375	24.8 ± 0.3
ZnO (3%)	29 ± 1	5.40 ± 0.03	38 ± 2	35 ± 12	30, 39	1.300	28.1 ± 0.3
ZnO (4%)	22 ± 1	5.43 ± 0.07	50 ± 3	41 ± 14	33, 48	1.455	65.7 ± 0.3