Photocatalytic Materials and Process for Producing the Same

The present invention relates to a photocatalytic material having a visible light activity which includes a tungsten-doped titanium oxide or a tungsten/gallium-codoped titanium oxide, and a divalent copper salt and/or a trivalent iron salt supported on a surface of the doped or codoped titanium oxide, and a process for producing the photocatalytic material.

The photocatalytic material of the present invention includes a tungsten-doped titanium oxide prepared by doping tungsten into titanium oxide (hereinafter occasionally referred to merely as a "W-doped titanium oxide") or a tungsten/gallium-codoped titanium oxide prepared by codoping both of tungsten and gallium into titanium oxide (hereinafter occasionally referred to merely as a "W/Ga-codoped titanium oxide"), and a divalent copper salt (hereinafter occasionally referred to as a "copper divalent salt") and/or a trivalent iron salt (hereinafter occasionally referred to as an "iron trivalent salt") supported on a surface of the doped or codoped titanium oxide, and has a visible light activity.

The term "having a visible light activity" as used herein means that the photocatalytic material is capable of absorbing a larger amount of a light having any wavelength in a wavelength region of a visible light irradiated than that absorbed by titanium oxide by itself (for example, titanium oxide of an anatase type) so that oxidative decomposition reaction of organic substances can be further promoted as compared to the case where the titanium oxide is used.

Patents:
JP 2,011,031,139

Type of Offer: Sale



« More Material Science Patents

---