Title:
PHOTOCATALYST APPLICATION LIQUID, PHOTOCATALYTIC STRUCTURE, AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/004050
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a photocatalyst application liquid which is for easily forming a photocatalyst layer that has excellent strength and exhibits sufficient photocatalytic activity, and a production method therefor; and a photocatalytic structure having a photocatalyst layer that has excellent strength and exhibits sufficient photocatalytic activity, and a production method therefor. This photocatalyst application liquid production method comprises: a step for mixing a hydrolysable silane compound represented by formula (1): Si(OR)4 (in the formula, each R represents an alkyl group having 1-4 carbon atoms, wherein the four R's may be the same or different from each other), a monovalent alcohol having 1-4 carbon atoms, an acid, water, and fine particles of a photocatalytic material so as to prepare a mixture wherein the contained amount of the hydrolysable silane compound is at most 5 mass% in SiO2 equivalent, and the molar ratio (water/hydrolysable group) between the hydrolysable group in the hydrolysable silane compound and the water is at least 8, and the contained amount of the monovalent alcohol having 1-4 carbon atoms is 20-50 mass%; and a step for subjecting the hydrolysable silane compound in the mixture to hydrolysis or hydrolytic condensation using the acid as a catalyst.
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Inventors:
KOBAYASHI DAIYA (JP)
YANAGITA MITSUHIRO (JP)
YANAGITA MITSUHIRO (JP)
Application Number:
PCT/JP2018/023600
Publication Date:
January 03, 2019
Filing Date:
June 21, 2018
Export Citation:
Assignee:
NIPPON SODA CO (JP)
International Classes:
B01J35/02; B01J37/04; B01J37/08; C09D5/02; C09D7/40; C09D183/02
Foreign References:
| JP2002146283A | 2002-05-22 | |||
| JP2001198474A | 2001-07-24 | |||
| JPH11197513A | 1999-07-27 | |||
| JPH10180115A | 1998-07-07 | |||
| JP2003155448A | 2003-05-30 | |||
| JP2000051708A | 2000-02-22 | |||
| JP2002180005A | 2002-06-26 |
Attorney, Agent or Firm:
HIROTA, Masanori (JP)
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