Titanium hydroxide, photocatalyst produced from the same and photocatalytic coating agent
AssigneeSumitomo Chemical Company, Limited
InventorsYoshiaki Sakatani, Hironobu Koike, Hiroyuki Ando
Life of this patent
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Abstract
There is provided a titanium hydroxide having a nitrogen content of 2.3% by weight or more in terms of nitrogen atom based on the titanium hydroxide and/or having a nitrogen content of about 3.3% by weight or more in terms of nitrogen atom based on the titanium oxide obtained after calcining the titanium hydroxide in air at about 400° C. The titanium hydroxide may be utilized as a raw material for producing a photocatalyst which exhibits a superior photocatalytic activity by irradiation of visible light.
Claims6
A titanium hydroxide having a nitrogen content of 2.3% by weight or more in terms of nitrogen atom based on the titanium hydroxide and/or having a nitrogen content of about 3.3% by weight or more in terms of nitrogen atom based on the titanium oxide obtained after calcining the titanium hydroxide in air at about 400° C.
A process for producing a titanium hydroxide having a nitrogen content of 2.3% by weight or more in terms of nitrogen atom based on the titanium hydroxide and/or having a nitrogen content of about 3.3% by weight or more in terms of nitrogen atom based on the titanium oxide obtained after calcining the titanium hydroxide in air at about 400° C., which comprises the step of adding an ammonia solution or an ammonium compound into an aqueous solution of titanium compound.
Dependencies are inferred from the claim text.