Method for preparing octahedral nano titanium dioxide

The present invention relates to a method of preparing octahedral morphology of titanium dioxide, comprising the steps of: a titanium source inorganic dissolved in distilled water, the aqueous solution A is added dropwise under stirring to obtain a homogeneous emulsion; homogenous emulsion was transferred to B. to a closed reaction vessel, reactor filling ratio of 70% to 80%, heated to 70 to 130. deg.] C, the reaction was kept 0 ~ 24h; and then warmed to 180 ~ 220 ℃, the reaction was kept 6 ~ 48h, to give the product; c. step b the product was obtained in a solid-liquid separation, the solid was washed with distilled water, dried, to obtain octahedral morphology of titanium dioxide powder. The method is simple and easy to operate, easy to implement conditions for large-scale industrial production.