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 9:
10. 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;
adding tungsten hexachloride (WCl6) to the alkaline solvent to form a first reaction solution;
adding an additive 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 number of moles of the added strong acid is greater than the sum of the number of moles of the tungsten chloride and the number of moles of the additive.