公开(公告)号：US11667540B2

公开(公告)日：2023-06-06

申请号：US17535596

申请日：2021-11-25

Applicant: Ming Chi University of Technology

Inventor： Kun-Cheng Peng ,  Chun-Ying Lee ,  Kuan-Ting Wu ,  Chen-Wei Chu ,  Yan-Chen Lin

IPC: C01G23/053 ,  B01J21/06 ,  B05D1/02 ,  B01J37/02 ,  B01J35/00

CPC classification number: C01G23/0536 ,  B05D1/02 ,  B01J21/063 ,  B01J35/004 ,  B01J37/0215 ,  B05D2203/30 ,  C01P2002/52

Abstract: The manufacturing method of titanium dioxide solution includes: mixing choline chloride, urea, boric acid, and titanium tetrachloride to form a first solution, wherein a molar concentration ratio of choline chloride to urea is 1:2, a molar concentration of titanium tetrachloride is 0.2 M to 0.4 M, and weight/volume of boric acid is 5 g/300 ml to 15 g/300 ml; and heating the first solute ion to form a second solution, wherein the second solution contains carbon/nitrogen doped titanium dioxide. In the manufacturing method of the present disclosure, the deep eutectic solution formed by choline chloride and urea may be used as a solvent, and may also be used as a carbon source and/or a nitrogen source. Therefore, titanium dioxide may be doped with carbon and/or nitrogen during the formation process.