NEUTRAL STABLE AND TRANSPARENT PHOTOCATALYTIC TITANIUM DIOXIDE SOLS

摘要

Neutral, stable and transparent photocatalytic titanium dioxide sol. The method comprises the steps of: (i) contacting alkaline titanium dioxide sol with an alkaline peptizing agent to provide a peptized alkali titanium dioxide sol; (ii) neutralizing the peptized alkaline titanium dioxide sol; And (iii) obtaining or collecting a neutral, stable, and transparent photocatalytic titanium dioxide sol. The titanium dioxide sol is stable and transparent for a pH range of about 7.0 to about 9.5. The titanium dioxide sol may comprise a titanium dioxide crystallite in which at least 90% of the crystallites present in the anatase form have an average particle size of less than about 10 nm.