Patent ID: 8148289
Filing Date: 2012-04-03
Classification: A61L,B01J,C01G,C01P

Abstract:
1. A method for producing a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, the method comprising the steps of: mixing a fluorine compound and an aqueous dispersion solution of an anatase-type titanium oxide that absorbs n-butylamine in an amount of 8 μmol/g or less, and when a pH of the mixed solution exceeds 3, adjusting the pH at 3 or less with an acid, whereby the titanium oxide and the fluorine compound are caused to react with each other in the mixed solution; and washing a reaction product obtained by the reaction, whereby a titanium oxide photocatalyst is obtained that contains at least the anatase-type titanium oxide and the fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and, of an entirety of the fluorine, a proportion of fluorine chemically bonded to the anatase-type titanium oxide is 90 wt % or more.