Table 1.

The NiO NPs lattice parameters.

2θ (o)	h k l	d-spacing (Å)	FWHM	D (nm)
37.25	111	2.4114	0.4394	19.92
43.29	200	2.0885	0.4706	18.96
62.86	220	1.4771	0.5760	16.87