Synthesis of Zinc Oxide Nanoparticles Using Leaf Extract of Lippia adoensis (Koseret) and Evaluation of Its Antibacterial Activity

Table 1

FWHM values, average crystallite sizes calculated using Scherrer’s formula, d-spacing (d_{h k l}), and Miller indices of calcinated and uncalcinated ZnO NPs synthesized using zinc acetate dihydrate and Lippia adoensis leaf extract at ratios by volume of 3 : 2, 1 : 1, and 9 : 1.

			3 : 2 ZnO NPs	3 : 2 UZnO NPs	1 : 1 ZnO NPs	1 : 1 UZnO NPs	9 : 1 ZnO NPs
h k l	2θ (degree)	d-spacing (dh k l)	FWHM (degree)	FWHM (degree)	FWHM (degree)	FWHM (degree)	FWHM (degree)
1 0 0	31.7773	2.81369	0.35610	0.35010	0.44830	0.68000	0.30140
0 0 2	34.4411	2.60192	0.38560	0.41040	0.46960	1.18660	0.29280
1 0 1	36.2598	2.47548	0.39210	0.39870	0.48830	0.75380	0.30810
1 0 2	47.5471	1.91083	0.45350	0.45000	0.57290	0.65330	0.28000
1 1 0	56.6034	1.62471	0.43830	0.41840	0.55160	0.72000	0.34300
1 0 3	63.3832	1.46627	0.35500	0.45180	0.65800	0.80000	0.37210
2 0 0	66.4138	1.40671	0.46700	0.32400	0.66500	—	0.24580
1 1 2	67.9799	1.37788	0.55040	0.52670	0.70180	0.76000	0.27340
2 0 1	69.0795	1.35861	0.51600	0.45550	0.70660	0.78000	0.41430
Average crystallite size			22.6 nm	22.5 nm	18.5 nm	9 nm	26.7 nm