Title:
VISIBLE-LIGHT-RESPONSIVE TITANIUM OXIDE MICROPARTICLE DISPERSION, AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/145385
Kind Code:
A1
Abstract:
Disclosed are: a visible-light-responsive titanium oxide dispersion in which titanium oxide microparticles are dispersed highly stably, and which enables the easy production of a photocatalyst thin film having responsiveness to visible light and high transparency; and a process for producing the visible-light-responsive titanium oxide dispersion. Specifically disclosed are: a visible-light-responsive titanium oxide microparticle dispersion comprising an aqueous dispersion medium and titanium oxide microparticles dispersed in the aqueous dispersion medium, and additionally comprising a peroxotitanium component, an iron component and/or a copper component and a tin component, wherein the content of the peroxotitanium component is 0.1 to 20 mass% relative to the content of titanium oxide; and a process for producing a visible-light-responsive titanium oxide microparticle dispersion, comprising the steps of (1) producing peroxotitanic acid containing a tin compound from a raw material titanium compound, a tin compound and hydrogen peroxide, (2) heating an aqueous solution of peroxotitanic acid containing the tin compound to 80 to 250˚C under a high pressure to produce a titanium oxide microparticle dispersion containing a peroxotitanium component and a tin component, and (3) adding an iron compound and/or a copper compound to the titanium oxide microparticle dispersion to cause a reaction between the iron compound and/or the copper compound with the dispersion.
Inventors:
FURUDATE Manabu (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
古舘 学 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
INOUE Tomohiro (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
井上 友博 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
古舘 学 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
INOUE Tomohiro (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
井上 友博 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
Application Number:
JP2011/055730
Publication Date:
November 24, 2011
Filing Date:
March 11, 2011
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd. (6-1 Ohtemachi 2-chome, Chiyoda-ku Tokyo, 04, 〒1000004, JP)
信越化学工業株式会社 (〒04 東京都千代田区大手町二丁目６番１号 Tokyo, 〒1000004, JP)
FURUDATE Manabu (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
古舘 学 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
INOUE Tomohiro (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
信越化学工業株式会社 (〒04 東京都千代田区大手町二丁目６番１号 Tokyo, 〒1000004, JP)
FURUDATE Manabu (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
古舘 学 (〒02 茨城県神栖市東和田１番地 信越化学工業株式会社 塩ビ・高分子材料研究所内 Ibaraki, 〒3140102, JP)
INOUE Tomohiro (Shin-Etsu Chemical Co. Ltd., 1, Towada, Kamisu-sh, Ibaraki 02, 〒3140102, JP)
International Classes:
B01J35/02; B01J23/825; B01J23/835; C09C1/36; C09C3/06
Attorney, Agent or Firm:
KOJIMA Takashi (GINZA OHTSUKA Bldg. 2F, 16-12 Ginza 2-chome, Chuo-k, Tokyo 61, 〒1040061, JP)
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