PHOTOCATALYST WITH TITANIUM DIOXIDE AS BASE MATERIAL AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a photocatalyst being a titanium dioxide forming solid soln. with Nb(V). SOLUTION: The titanium dioxide containing 0.1-5.0wt.% Nb2 O5 and having 50-350m<2> /g specific surface area or the titanium dioxide containing 0.1-5.0wt.% Nb2 O5 and having a crystalline diameter within a range of 80-250Åexhibit an excellent photocatalytic activity. The photocatalyst is obtained by adding a Nb(V) compd. to titaniyl sulfate or metatitanic acid and heating at <=700 deg.C.