Table S1.

Calculation of particle size of ZNPs from FWHM of X-ray diffraction pattern

	Phase	Peak position	FWHM (radians)	Cos Bragg’s angle θ	Particle size (nm)
ZNPs	1010	31.67°	0.010543	0.96205	13.668
	0002	34.33°	0.009201	0.95545	15.766
	1011	36.16°	0.010875	0.95062	13.406
	1012	47.46°	0.012688	0.91543	11.932
	1120	56.52°	0.014268	0.88080	11.028
	1013	62.80°	0.015158	0.85355	10.712

Abbreviations: FWHM, full width at half maximum; ZNP, zinc oxide nanoparticle.