Kabushiki Kaisha Toshiba

Toshiba Materials Co., Ltd.

Yukiko Inui

Akira Sato

Takao Kusaka

Kayo Nakano

Daisuke Fukushi

Akito Sasaki

Hiroyasu Oota

Akihisa Nitsuta

An aqueous dispersion of an embodiment includes visible-light responsive photocatalytic composite microparticles containing tungsten oxide and zirconium oxide, and an aqueous dispersion medium in which the photocatalytic composite microparticles are dispersed. In the photocatalytic composite microparticles, a ratio of a mass of the zirconium oxide to a mass of the tungsten oxide is in a range of from 0.05% to 200%, and a D50 particle size in particle size distribution is in a range of from 20 nm to 10 &#x3bc;m. The aqueous dispersion has pH in a range of from 1 to 9.

Aqueous dispersion and coating material using the same, and photocatalytic film and product

A cation adsorbent of an embodiment includes tungsten oxide particles having a BET specific surface area in a range of 0.82 m/g or more and 820 m/g or less. The cation adsorbent is added to a solution to be treated containing cations being recovery objects, and the cation adsorbent adsorbing the cations is precipitated. The generated precipitate is separated from the solution to recover the cations.

Treatment method for solution containing metal ions using cation adsorbent

Cation adsorbent for solution treatment

Growing community of inventors

Yokosuka, Japan

Yukiko Inui