Photocatalyst-supporting body and photocatalytic apparatus

摘要

A photocatalyst-supporting body comprises a substrate, a porous layer fixedly disposed on at least one surface of the substrate, and a semiconductor photocatalyst layer deposited on the surface of the porous layer. The porous layer is made of fine particles or porous nonwoven metal fabric. Since the semiconductor photocatalyst is bound to the substrate through the porous layer, the area of the photocatalytic surface is increased and the contaminants in a fluid flow being treated adequately contact the photocatalytic surface thereby to enhance the photocatalytic efficiency. The photocatalytic efficiency is further improved by making the porous layer dense (rough) in the vicinity of the surface of the substrate and rough (dense) with increasing distance from the surface of the substrate.