Table 1.

Physicochemical parameters and their stability for 6 months when stored at 4 °C for the developed surface-functionalized THO-NPs (Surface functionalization: PX 0.8%, PL 0.8% or C 0.05%).

	t (Months)	Zav (nm)	PI	ZP (mV)
THO-NP-L-	0	193.3 ± 1.1	0.153 ± 0.029	−32.1 ± 0.9
	3	228.9 ± 19.6	0.154 ± 0.061	−24.3 ± 0.8
	6	254.8 ± 3.6	0.173 ± 0.018	−18.1 ± 0.5
THO-NP-P-	0	181.2 ± 4.9	0.052 ± 0.014	−22.8 ± 0.2
	3	193.2 ± 3.1	0.123 ± 0.032	−17.1 ± 0.3
	6	196.0 ± 4.1	0.123 ± 0.056	−13.9 ± 0.6
THO-NP-P-C+	0	237.5 ± 2.9	0.168 ± 0.028	24.3 ± 0.7
	3	326.9 ± 9.6	0.167 ± 0.06	20.1 ± 0.2
	6	344.4 ± 8.3	0.174 ± 0.02	16.5 ± 0.4