Patent ID: 11873232
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G  B | IPC B  C  G

Claim 15:
16. A method for producing hexagonal tungsten oxide, the method comprising:
preparing a solvent containing at least one of water or alcohol;
adding an alkali salt to the solvent to form an alkaline solvent having a pH of 8 to 9;
adding an additive to the alkaline solvent to form a first reaction solution;
adding tungsten hexachloride (WCl6) to the first reaction solution to form a second reaction solution; and
adding strong acid to the second reaction solution to form nanoparticles,
wherein the additive contains at least one of urea, monoethanolamine, or polyethylene glycol, and
the preparing of the first reaction solution, the preparing of the second reaction solution, and the adding of strong acid to the second reaction solution are performed at a temperature from 60° C. to 80° C.