POROUS COMPOSITE MATERIAL AND FILTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a porous composite material which has excellent photocatalytic activity, further has a large relative surface area and facilitates inner passing of gas and fluid. SOLUTION: The porous composite material 1 is provided with porous bodies 2 having a plurality of pores 2a which are communicated from surface to back surface and titanium dioxide-containing film 3 which is formed on 95 to 100% of the total surface of the porous bodies 2 including inner surface of the pores 2a. The inner surface of the pores 2a whose pore size is 1μm or less is included on the total surface of the porous bodies 2, porosity of the porous bodies is 50 to 98%, air permeability of the porous bodies 2 is 0.2 sec/100 ml or less and the basic weight is 0.1 to 10 mg/cm2. The titanium dioxide-containing film 3 is formed according to air-opening chemical gas phase deposition method and the titanium dioxide-containing film 3 includes titanium dioxide of 95% or more. COPYRIGHT: (C)2007,JPO&INPIT