PHOTOCATALYST COMPOSITE AND PHOTOCATALYTIC FUNCTIONAL PRODUCT USING THE SAME

• US 20110082026A1
• Filed: 09/14/2010
• Published: 04/07/2011
• Est. Priority Date: 09/16/2009
• Status: Abandoned Application

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Hara, Makiko, Takami, Hitoshi, Sogabe, Kohei, SAKATANI, Yoshiaki
• Application Number:
  US12/881,835
• Publication Number:
  US 20110082026A1
• Time in Patent Office: Days
• US Class Current: 502/159
• CPC Class Codes: B01J 21/063 Titanium; Oxides or hydroxides thereof
• CPC Class Codes: B01J 21/066 Zirconium or hafnium; Oxides or hydroxides thereof
• CPC Class Codes: B01J 23/30 Tungsten
• CPC Class Codes: B01J 23/42 Platinum
• CPC Class Codes: B01J 35/23 in a colloidal state
• CPC Class Codes: B01J 35/39 Photocatalytic properties
• CPC Class Codes: B01J 35/45 Nanoparticles
• CPC Class Codes: B01J 35/613 10-100 m2/g
• CPC Class Codes: B01J 37/0036 Grinding
• CPC Class Codes: B01J 37/0045 Drying a slurry, e.g. spray drying
• CPC Class Codes: B01J 37/0215 Coating
• CPC Class Codes: B01J 37/0219 the coating containing organic compounds
• CPC Class Codes: B01J 37/345 of ultraviolet wave energy

Abstract

The present invention provides a photocatalyst composite in which brittleness and ease of coming-off of a photocatalyst layer are reduced.

The photocatalyst composite includes a base material, at least the surface of which is formed of a plastic-deformable solid material; an inorganic particle layer containing inorganic particles disposed on the surface of the base material; and a photocatalyst layer containing a photocatalyst disposed on the surface of the inorganic particle layer; wherein at least one portion of voids in the inorganic particle layer is filled with the solid material, and the surface of the inorganic particle layer is coated with the solid material except for at least one portion.

Claims

1. A photocatalyst composite comprising,

a base material, at least the surface thereof being formed of a plastic-deformable solid material;

an inorganic particle layer containing inorganic particles and disposed on the surface of the base material; and

a photocatalyst layer containing a photocatalyst and disposed on the surface of the inorganic particle layer;

wherein, the solid material is filled in at least one portion of voids in the inorganic particle layer and the surface of the inorganic particle layer is coated with the solid material except for at least one portion.

2. The photocatalyst composite according to claim 1, wherein the inorganic particles do not undergo plastic deformation under the condition where the solid material undergoes plastic deformation.

3. The photocatalyst composite according to claim 1, wherein the inorganic particles constituting the inorganic particle layer are made of silica.

4. The photocatalyst composite according to claim 1, wherein the base material comprises a film of a solid material.

5. The photocatalyst composite according to claim 1, wherein the solid material is a thermoplastic resin.

6. The photocatalyst composite according to claim 1, wherein a noble metal or a noble metal precursor is supported on the photocatalyst of the photocatalyst layer.

7. The photocatalyst composite according to claim 6, wherein the noble metal is at least one kind of a noble metal selected from Cu, Pt, Au, Pd, Ag, Ru, Ir and Rh.

8. The photocatalyst composite according to claim 6, wherein the photocatalyst is a tungsten oxide particle.

9. A photocatalytic functional product provided with the photocatalyst composite according to claim 1.