I want to synthesize titanates, for this I have to dissolve TiO2 and I'm looking for a solvent in which to dissolve it
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.
TiO2 can be dissolved in conc. HCl and hopefully also in even 50% aq.H2SO4.
TiO2 can be dissolved in hot H2SO4 aq. (aprox. 20% wt.) or in HF aq. with added NH4F or HNO3.
Sulphuric acid is good solvent for titanium dioxide But it is difficult to perform any reaction in presence of sulphuric acid. so it is better to make suspension of titanium dioxide by adding surfactant which give you better result for further synthesis. or use of nano particle of titanium dioxide is better way.
@Micheal You are right of course, but for many of the ppl asking these questions, English may be a second or third language, and they may have no access to a native speaker to help with the language. I applaud the many who attempt to understand what is wanted and then respond politely and respectfully.
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.
Solubility: It is insoluble in dilute alkali, dilute acid, but soluble in hot concentrated sulfuric acid, hydrochloric acid, nitric acid. The solubility of titanium dioxide is related to solutes.
Arshad Bashir- I may have presumed but when I asked about the type of titanates you wish to synthesize, I was reading that you have keywords of Organic Chemistry and organic synthesis, and asked the simple clarification to be made that your work on "dissolving " TiO2 was in order to synthesize organo titanates. On the other hand, your last response on analytical methods might imply that you have TiO2 residues in your reaction that need dissolution to confirm by analyses.Most of the answers above can be used to render a solution for AA determination of Ti, but cannot differentiate the speciation of the anion. In the Patent literature the use of IR is useful in speciation of organo titanates from inorganic titanates. The neat materials have to be analyzed and care for the moisture and air sensitiveness of the organo titanates or labile starting materials ( TiCl4, Ti(SO4)2, etc).
Organo titanates have always been synthesized from such labile leaving groups interacting with the nucleophilic RO(-) in dry aprotic solvents that dissolve the labile Ti cmpds in true dissolution. Interferences are varying degrees of oligomer formation and some polymer and dispersed TiO2 from inevitable traces of moisture.
How I can increase the pH of solution made by dissolving TiO2 anatase powder in hot con. H2SO4 (conc. 70%)..?? Right now it's pH is " 1 " and I need to increase it to 6.. can someone give me a good suggestion in this matter.?
titanium oxide is not soluble in any solvent .it is being dispersed in form of emulsion in many organic solvents such as toluene
If I want to use TiO2 in skin products, how I can dissole or disperes it in ethanol?
Solubility in: 95% ETOH: 50-100 mg/mL
I would reduce particle size as much as possible to increase surface area boosting solubility. If you are intent on this, my experience is that cosmetics containing that much ethanol might be unpleasant or irritating. All of the major solvents (Water, DMSO, Acetone, Methanol, Toluene solubility is
In which solvent can Fe2O3 and Lanthanide oxide can be dissolved easily?
What about the solubility of TiO2 in hot concentrated phosphoric acid？ more easyly dissolve in hot concentrated sulphuric acid or hot concentrated phosphoric acid？ @ Dr. Joy Chakraborty
Mohammad Kooti The question mentions TiO2 and you mention TeO2 ('e' and 'i 'are very separate on the keyboard...
It may be that the question is badly phrased. Once dissolved (and concentrated hydrochloric acid will do this) then there are just Ti ions and Cl anions. I suspect that the question may relate to dispersion of TiO2 and this is typically not easy if the material is in powdered form. Personally I'd make 30 - 50 nm TiO2 from a sol-gel process. In the sub-100 nm region a suspecion will look as transparent as water. The powdered TiO2's (e.g. P25) typically give a white suspension with a mean size by volume in the 0.3 - 0.35 microns. See attached for some generalities:
Dispersion and nanotechnology
https://www.brainshark.com/malvern/vu?pi=zHSznNgprz5chz0
However, the question does mention titanate production and thus solubility would be required.
An earlier debate:
https://www.researchgate.net/post/Which_solvent_is_suitable_to_dissolve_TiO2_nanoparticles
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