Photocatalytic particle comprising TiO2 and its manufacture

US10758891B2 · kind B2 · utility

Assignee

• JOMA INTERNATIONAL AS · NO

Inventors

• Robert William Corkery · Stockholm, SE
• Andreas Westermoen · Frekhaug, NO

Key dates

• Filing date: Jun 13, 2016
• Grant date: Sep 1, 2020
• Expiry date: Dec 29, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2235/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A TiO2 photocatalytic particle comprises at least one core with a crystalline anatase structure, a first layer is at least partly surrounding the core, and comprising one from TiO2, TiO(2-x), and TiO2*H2O, said first partly ordered layer comprising parts where molecules are aligned with an imaginary extension of the crystal planes of the core, the first layer is in close contact with a second outer layer, at least partly enclosing the first layer and the core. The second layer comprises one from layered titanium dioxide and titanium dioxide in TiO2 (B)-form, said second layer is partly ordered, and said second layer comprising sheets aligned with crystal planes transversal to the outer surface of said particle. Advantages include that the outer layer of the particles can be modified to be optimized for the particular application which is an advantage for catalysis and other application where the properties of the outermost surface is of importance.