Cementitious products and articles of manufacture containing carbon-doped titanium dioxide
AssigneeItalcementi S.p.A.
InventorGian Luca Guerrini
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Abstract
Herein described are cementitious products and articles of manufacture comprising a carbon-doped titanium dioxide, having long-term photocatalytic activity. The titanium dioxide contained therein may be obtained by irradiating titanium dioxide under specific conditions of wavelength, in presence of a gas flow comprising an inert gas and an organic compound. The titanium dioxide thus treated acquires a high and stable carbon content, maintaining the specific surface area thereof substantially unaltered. The cementitious products/articles of manufacture containing it have a high and efficient photocatalytic action.
Claims10
A process to obtain carbon-doped titanium dioxide, consisting of irradiating titanium dioxide, exposed to a gas flow comprising an inert gas and an organic compound, at a wavelength comprised between 300 and 400 nm, wherein the temperature of the reaction environment and of the titanium dioxide is maintained lower than 50° C.
Dependencies are inferred from the claim text.