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US 2016/0107145 A1Published application
Photocatalyst material
AssigneeSharp Kabushiki Kaisha
InventorsShinya OKAZAKI, Hiroyuki NISHINAKA, Masakazu MATSUBAYASHI
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Abstract
A photocatalyst material (1A) in accordance with an aspect of the present invention includes a core particle (2) and a shell layer (3) with which a whole surface of the core particle (2) is covered. The core particle (2) contains at least a tungsten oxide, and the shell layer (3) is constituted by a titanium oxide.
Claims10
1:
- A photocatalyst material comprising:
- a core particle;
- and
- a shell layer with which a whole surface of the core particle is covered,
- the core particle containing at least a tungsten oxide, and
- the shell layer being constituted by a titanium oxide.
3 more elements
2:
- The photocatalyst material as set forth in claim 1, wherein:
- the shell layer is constituted by a crystalline titanium oxide.
3:
- The photocatalyst material as set forth in claim 1, wherein:
- a metal or a metal compound containing at least one of copper, platinum, palladium, iron, silver, gold, nickel, ruthenium, iridium, niobium, and molybdenum is provided on a surface of the shell layer.
4:
- The photocatalyst material as set forth in claim 3, wherein:
- an amount of a metal contained in the metal or in the metal compound is 0.01 wt % or greater and 3 wt % or less with respect to the tungsten oxide contained in the core particle.
5:
- The photocatalyst material as set forth in claim 1, wherein:
- the core particle contains a mixture of a tungsten oxide and a copper oxide.
6:
- The photocatalyst material as set forth in claim 5 wherein:
- an amount of the copper oxide contained in the core particle is greater than 0.01 wt % and less than 100 wt % with respect to the tungsten oxide contained in the core particle.
(canceled)
8:
- The photocatalyst material as set forth in claim 1, wherein:
- a weight proportion of the shell layer to the core particle is 0.01 or greater and 1.0 or less.
(canceled)
10:
- A method of producing a photocatalyst material,
- said photocatalyst material comprising:
- a core particle;
- and
- a shell layer with which a whole surface of the core particle is covered,
- said method comprising the step of:
- growing, by adding a solution containing a titanium oxide precursor to a solution in which at least tungsten oxide particles each serving as the core particle are dispersed, a titanium oxide layer on a whole surface of at least one of the tungsten oxide particles.
4 more elements
Dependencies are inferred from the claim text.