Dear Avanish Babu ,
In the syntheses procedure, the additive is usually water and sodium hydroxide.
The titanium complex ion at low acidity is in the form of [Ti (OH)3(OH2)3]+ or [Ti(OH)2SO4(OH2)2]0, basically due to the low degree of protonation of the precursor TiOSO4 sulfate ions, in general, please see the manuscript listed bellow.
Sugimoto, T.; Zhou, X.; Muramatsu, A. Synthesis of Uniform Anatase TiO2 Nanoparticles by Gel−Sol Method: 1. Solution Chemistry of Ti(OH)n(4−n)+ Complexes. J. Colloid Interface Sci. 2002, 252 (2), 339−346.
Pottier, A.; Chanéac, C.; Tronc, E.; Mazerolles, L.; Jolivet, J. Synthesis of brookite TiO2 nanoparticles by thermolysis of TiCl4 in strongly acidic aqueous media. J. Mater. Chem. 2001, 11, 1116−1121.
Zheng, W.; Liu, X.; Yan, Z.; Zhu, L. Ionic Liquid-Assisted Synthesis of Large-Scale TiO2 Nanoparticles with Controllable Phase by Hydrolysis of TiCl4. ACS Nano 2009, 3 (1), 115−122.
Best regards,
WNM
TiO2 is not usually soluble in common polar or non-polar solvents. The solubility of titanium dioxide is related to solutes. It is insoluble in dilute alkali, dilute acid, but soluble in hot concentrated sulfuric acid, hydrochloric acid, hydrofluoric acid and nitric acid but not in the form of TiO2 but as a salt like sulfate, chloride, nitrate etc. Titanium dioxide can melt in the alkali (sodium hydroxide, potassium hydroxide) or alkali metal carbonate (sodium carbonate, potassium carbonate). Any one of which i have mentioned with Titanium dioxide can be transformed into soluble acid titanate.
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