Porous body and manufacturing method therefor

• US 20070256735A1
• Filed: 07/17/2007
• Published: 11/08/2007
• Est. Priority Date: 06/20/2003
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yamada, Yuka, Sasaki, Hidehiro, Suzuki, Nobuyasu, Suzuki, Masa-aki, Morinaga, Yasunori
• Application Number:
  US11/826,567
• Publication Number:
  US 20070256735A1
• Time in Patent Office: Days
• US Class Current: 136/263
• CPC Class Codes: B01J 21/063 Titanium; Oxides or hydroxides thereof
• CPC Class Codes: B01J 23/42 Platinum
• CPC Class Codes: B01J 35/04 Foraminous structures, sieves, grids, honeycombs
• CPC Class Codes: B01J 35/56 Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
• CPC Class Codes: B01J 37/0009 Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
• CPC Class Codes: B01J 37/0018 Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
• CPC Class Codes: B01J 37/084 Decomposition of carbon-containing compounds into carbon
• CPC Class Codes: C04B 2111/00827 Photocatalysts; materials containing photocatalysts to avoid staining by air pollutants C04B2111/2061
• CPC Class Codes: C04B 2111/94 Electrically conducting materials
• CPC Class Codes: C04B 2235/3232 Titanium oxides or titanates, e.g. rutile or anatase
• CPC Class Codes: C04B 2235/408 Noble metals
• CPC Class Codes: C04B 2235/441 Alkoxides, e.g. methoxide, tert-butoxide
• CPC Class Codes: C04B 2235/5409 expressed by specific surface values
• CPC Class Codes: C04B 2235/6028 Shaping around a core which is removed later
• CPC Class Codes: C04B 2235/608 Green bodies or pre-forms with well-defined density
• CPC Class Codes: C04B 2235/80 Phases present in the sintered or melt-cast ceramic products other than the main phase
• CPC Class Codes: C04B 35/46 based on titanium oxides or titanates containing also zirconium or hafnium oxides, zirconates or hafnates C04B35/49
• CPC Class Codes: C04B 35/52 based on carbon, e.g. graphite
• CPC Class Codes: C04B 35/524 obtained from polymer precursors, e.g. glass-like carbon material
• CPC Class Codes: C04B 35/624 Sol-gel processing
• CPC Class Codes: C04B 35/62655 : Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
• CPC Class Codes: C04B 38/00 : Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof treating slag with gases or gas generating material C04B5/06 ; expanded graphite C04B35/536
• CPC Class Codes: C04B 41/5027 : Oxide ceramics in general; Specific oxide ceramics not covered by C04B41/5029 - C04B41/5051
• CPC Class Codes: H01G 9/2031 : comprising titanium oxide, e.g. TiO2 H01G9/2036 takes precedence
• CPC Class Codes: H01M 8/0606 : with means for production of gaseous reactants
• CPC Class Codes: Y02E 10/542 : Dye sensitized solar cells
• CPC Class Codes: Y02E 60/50 : Fuel cells
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 428/249962 : Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]

Abstract

It is an object of the present invention to provide a porous body containing an oxide semiconductor in which more efficient photocatalytic reactions and photoelectrode reactions occur. The present invention relates to a porous body having a network structure skeleton wherein 1) the aforementioned skeleton is composed of an inner part and a surface part, 2) the aforementioned inner part is substantially made of carbon material, and 3) all or part of the aforementioned surface part is an oxide semiconductor, and to a manufacturing method therefor.

Claims

1. A porous body having a network structure skeleton, wherein 1) the skeleton is composed of an inner part and a surface part, 2) the inner part is made of carbon material, and 3) all or part of the surface part is an oxide semiconductor,

the network structure skeleton is composed of an aggregation of fine particles,

the fine particles have a particle size of 100 nm or less.

2. The porous body according to claim 1, wherein the oxide semiconductor is at least one kind of metal oxide.

3. The porous body according to claim 1, wherein the specific surface area is 100 m²/g or more.

4. The porous body according to claim 1, wherein a co-catalyst is supported on the skeleton.

5. The porous body according to claim 4, wherein the oxide semiconductor has a catalytic function and the co-catalyst contacts the oxide semiconductor.

6. The porous body according to claim 1, wherein a dye is supported on the skeleton.

25. A solar cell comprising the porous body of claim 1 as an electrode material.

7-24. -24. (canceled)