Table 1.

Chemical formulae of pristine MgAl–citrate LDH, SONP@LDH-1, SONP@LDH-1/3 and SONP@LDH-1/10. Nominal composition was calculated by hypothesizing all Ag⁺ participated in SONP production. Empirical composition was the quantitative analysis results from XPS.

	Nominal Composition		Empirical Composition
	Chemical Formulae	Ag2O Contents (%)	Chemical Formulae	Ag2O Contents (%)
MgAl–citrate LDH	Mg1.6Al(citrate)0.33(OH)5.2	-	Mg1.6Al(citrate)0.33(OH)5.2	-
SONP@LDH-1	Mg1.6Al(citrate)0.33(OH)5.2(Ag2O)0.50	35	Mg1.5Al(citrate)0.33(OH)5.0(Ag2O)0.28	23
SONP@LDH-1/3	Mg1.6Al(citrate)0.33(OH)5.2(Ag2O)0.17	16	Mg1.5Al(citrate)0.33(OH)5.0(Ag2O)0.12	12
SONP@LDH-1/10	Mg1.6Al(citrate)0.33(OH)5.2(Ag2O)0.050	5.1	Mg1.4Al(citrate)0.33(OH)4.8(Ag2O)0.057	6.1