Porous body and manufacturing method therefor

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.

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 m 2 /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.  
   
   
       7 - 24 . (canceled)  
   
   
       25 . A solar cell comprising the porous body of  claim 1  as an electrode material.