Synthesis of Nanoscale TiO₂ and Study of the Effect of Their Crystal Structure on Single Cell Response

Table 2

Hydrodynamic diameters of TiO₂ particles in freshly prepared and neutralized sols.

Samples	Particle size (nm) in fresh sols		Particle size (nm) in neutralized sols
	Before US	After US	After US
Amorphous (1.5)	12000	202	200
Brookite (2.1)	20	2.2	50
Rutile (2.2)	1200	1200	1200
Anatase (3.2)	10	12	90
Anatase (3.3)	7	13	40
Anatase (3.5)	3	9	50