Table 2.

X-ray diffraction measurements of P.C.-AgNPs for evaluating average crystallite size

(hkl)	2θ (deg)	θ (deg)	β (rad)	D (nm)
(111)	38.35	19.18	0.0131	11.12
(200)	44.56	22.28	0.0129	11.47
(220)	64.74	32.37	0.0125	12.96
(311)	77.62	38.81	0.0131	13.42

Notes: D represents the mean crystal size of P.C.-AgNPs, β represents the width of the XRD peak at half-height, and θ represents the Bragg angle.

Abbreviations: P.C.-AgNPs, Polygonum cuspidatum Sieb. et-coated silver nanoparticles; XRD, X-ray diffraction.