Patent Number: 7,709,540

Title: Method for preparing organic ligand-capped titanium dioxide nanocrystals

Abstract: The present invention belongs to a method for preparing organic ligand-capped titanium dioxide nanocrystals, wherein the method comprises steps of using methyl titanate, ethyl titanate, n-propyl titanate, iso-propyl titanate, butyl titanate or titanium tetrachloride as a titanium source, and with capping by oleic acid or an organic capping agent, reacting the titanium source in an organic non-polar solvent with an aqueous alkaline substance solution in the interface at a temperature of 25 to 280.degree. C. for 0.5 to 240 hrs, thus a transparent sol containing titanium dioxide nanocrystals is obtained, said the titanium dioxide nanocrystals have particle diameters of 1-20 nm. The preparing process has the features of mild reaction conditions and is a simpler and easier method with a shorter preparation period, thereby facilitating the industrialization.

Inventors: Pan; Daocheng (Changchun, CN), Zhao; Nana (Changchun, CN), Wang; Qiang (Changchun, CN), Ji; Xiangling (Changchun, CN), Jiang; Shichun (Changchun, CN), An; Lijia (Changchun, CN)

Assignee: Changchun Institute of Applied Chemistry Chines Academy of Sciences

International Classification: B01F 3/08 (20060101); B01F 3/04 (20060101); C01G 23/047 (20060101); C09K 3/00 (20060101); C23C 16/40 (20060101); C30B 21/02 (20060101); C30B 28/06 (20060101); C30B 7/00 (20060101)

Expiration Date: 5/04/12018