Patent ID: 7851407
Filing Date: 2010-12-14
Classification: B01J,B82Y,C01G,C01P

Abstract:
1. A method for producing a titanium dioxide photocatalyst, the method comprising the steps of: (1) adding a solution (“Solution A”) containing an acid, water and an organic solvent dropwise to a solution of a titanium alkoxide in an organic solvent with stirring until the pH of the resulting solution is adjusted to 0.5 to 2.0; (2) reacting the mixed solution with stirring for 12 to 48 hours to form a sol; (3) adding a basic aqueous solution dropwise at a rate of 0.05 to 0.5 ml/sec to the reaction solution with stirring until the pH of the resulting solution reaches 6.0 to 10.0 to convert the sol to a gel; (4) drying the gel at 110° C. for 12 hours, followed by pulverization to obtain a powder; and (5) calcining the powder at 350 to 800° C.