The University of Tokyo

Panasonic Corporation

Showa Denko K.k.

Huogen Yu

Kazuhito Hashimoto

Hiroshi Irie

Mitsuo Yaguchi

Koichi Takahama

Yasushi Kuroda

Yasuhiro Hosogi

Shinichiro Miki

Kazuhide Kamiya

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.

Photocatalytic materials and process for producing the same

A divalent copper salt and/or trivalent iron salt is supported on a surface of a metal ion-doped titanium oxide obtained by doping titanium oxide with metal ions to give a metal ion-doped titanium oxide with a valence band potential of 3 V or more (vs. SHE, pH=0) and a bandgap of 3 V or less between the valence band and an energy level of electrons excited from the valence band (including conduction band minimum potential and isolated potential). The metal ion-doped titanium oxide can be made to exhibit strong oxidative decomposition activity when irradiated with visible light based on the fact the divalent copper salt or trivalent iron salt functions as a catalyst for multi-electron reduction of oxygen.

Photocatalytic material, method of decomposing organic substance, interior member, air cleaning device, and device for producing oxidizing agent

Growing community of inventors

Hubei, China

Huogen Yu