Table 1.

Zeta potential (ZP) and hydrodynamic diameter (HD) ± standard deviation (n = 3) of the test materials from single to binary mixture systems.

Test Materials	0 h		96 h
	ZP (mV)	HD (nm)	ZP (mV)	HD (nm)
TiO2 NPs	−14.4 ± 0.2	969 ± 357	−13.2 ± 0.3	643 ± 84.5
TiO2 NTs	−12.5 ± 1.0	748 ± 201	−13.7 ± 2.3	681 ± 94.5
TiO2 NPs + NTs	−12.8 ± 0.5	943 ± 99	−12.9 ± 0.4	477 ± 21.1