Synthesis of Zinc Oxide Nanoparticles by Hydrothermal Methods and Spectroscopic Investigation of Ultraviolet Radiation Protective Properties

Table 1

Diffraction angle (2theta), FWHM (), and average crystallite size () of prepared ZnO NPs.

No.	2theta (degree)	Cos2 (radian)	(radian)	(Cos2)	Crystallite size (nm)	Average (nm)
1	21.77	0.0162	0.269	0.0043	31.90	32.49
2	24.43	0.0159	0.278	0.0044	31.18
3	26.26	0.0156	0.298	0.0046	29.82
4	37.55	0.0138	0.365	0.0050	27.44
5	46.62	0.0119	0.355	0.0042	32.67
6	52.88	0.0105	0.417	0.0043	31.90
7	56.40	0.0096	0.377	0.0036	38.11
8	57.97	0.0096	0.426	0.0040	34.30
9	59.10	0.0089	0.442	0.0039	35.17