Fe2O3 PHOTOCATALYST COMPONENT, PHOTOCATALYST AND METHOD OF REMOVING NITROGEN OXIDE IN AIR

摘要

PROBLEM TO BE SOLVED: To provide a photocatalyst component for denitration useful to nitrify and to remove NOx in air by irradiation of visible rays at normal temperature, and to provide a photocatalyst for denitration and a method of removing nitrogen oxides in air. SOLUTION: The photocatalyst component for denitration substantially consists of α-crystal Fe2O3 having >=20 m2/g specific surface area measured by the BET method. The photocatalyst for denitration contains the aforementioned photocatalyst component to nitrify gaseous nitrogen oxides in air. In the method of removing nitride oxides in air, the gaseous nitrogen oxides is nitrified by bringing air containing gaseous nitrogen oxides into contact with the photocatalyst component while irradiating with light containing the component of light at <=539 nm wavelength.