Panasonic Corporation

The University of Tokyo

Kazuhide Kamiya

Kazuhito Hashimoto

Yuya Suzuki

Koichi Takahama

Mitsuo Yaguchi

Hiroshi Irie

Shuji Nakanishi

Shinichiro Miki

Huogen Yu

Ryo Kamai

Syuhei Miura

Kazuyuki Iwase

Shinya Hashimoto

Ittetsu Oba

Dai Takeda

Jun Matsumoto

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

The present invention provides a tungsten trioxide microparticle carrying on its surface divalent copper salt. The divalent copper salt is utilized to perform a multi-electron reduction of oxygen. The tungsten trioxide exhibits a high oxidative decomposition activity when exposed to visible light.

Photocatalyst material, method for decomposition of organic material, interior member, air purification device, and apparatus for preparation of oxidizing agent

Growing community of inventors

Tokyo, Japan

Kazuhide Kamiya