| abstract |
Disclosed are a titanic acid nanosheet dispersion having a low content of an ammonium compound, a phosphonium compound, and an amine, and a highly transparent titanate nanosheet dispersion, a titanate nanosheet dispersion, and a titanate nanosheet solid. (1) A titanium source is hydrolyzed in the presence of a quaternary ammonium hydroxide or the like and an amine to obtain a titanic acid nanosheet aqueous dispersion, and a part of the obtained aqueous dispersion Alternatively, the whole is replaced with an organic solvent to obtain an organic solvent dispersion, which is mixed with a dispersion improver, and a method for producing a titanate nanosheet dispersion having a step of bringing the resulting dispersion into contact with a cation exchange resin (2) [[N] / [Ti]] and / or [[P] / [Ti]] (in the formula, [N], [P] and [Ti] obtained in the above-mentioned method) Represents the molar concentration of nitrogen atom, phosphorus atom and titanium atom in the dispersion, respectively.) The titanate nanosheet dispersion having a molar concentration ratio of less than 0.2, and (3) the titanate nanosheet dispersion The titanate nanosheet solid obtained by removing the dispersion medium from That. [Selection figure] None |