Rf. De Farias, Synthesis of TiO2 (anatase) by sol-gel process performed in metal chlorides saturated aqueous solutions, J COLL I SC, 239(2), 2001, pp. 584-586
Titania powders were synthesized by a sol-gel process using titanium tetrab
utoxide as a precursor. The syntheses were performed in water or in saturat
ed aqueous solutions of KCI, CaCl2, NiCl2, CoCl2, and MnCl2. It is demonstr
ated, by X-ray diffraction patterns of the synthesized powders that the sam
ples obtained in saturated aqueous solutions of metal chlorides are crystal
line (anatase phase) with some minor amount of brookite phase, whereas the
sample synthesized in water is amorphous in nature. Thus, it is shown that
the anatase phase can be obtained independently on any previous or further
treatment of the synthesized powder, such as hydrothermal or heat treatment
, providing a new, simple, quick, and inexpensive route to synthesize anata
se powders. (C) 2001 Academic Press.