Transparent photocatalyst coating and methods of manufacturing the same

• US 10,391,482 B2
• Filed: 07/03/2014
• Issued: 08/27/2019
• Est. Priority Date: 07/05/2013
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Fukumura, Takuya, Pan, Guang, Sambandan, Ekambaram, Mukherjee, Rajesh
• Primary Examiner(s): Mayes, Melvin C.
• Assistant Examiner(s): Cohen, Stefanie J
• Application Number:
  US14/903,019
• Publication Number:
  US 20160151774A1
• Time in Patent Office: 1,881 Days
• Field of Search: None
• CPC Class Codes: B01J 23/10 of rare earths
• CPC Class Codes: B01J 23/14 of germanium, tin or lead
• CPC Class Codes: B01J 23/30 Tungsten
• CPC Class Codes: B01J 23/72 Copper
• CPC Class Codes: B01J 23/835 with germanium, tin or lead
• CPC Class Codes: B01J 35/39 Photocatalytic properties
• CPC Class Codes: B01J 37/34 Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
• CPC Class Codes: C23C 14/0688 Cermets, e.g. mixtures of metal and one or more of carbides, nitrides, oxides or borides
• CPC Class Codes: C23C 14/08 Oxides C23C14/10 takes precedence

Abstract

Methods for making photocatalyst compositions and elements exhibiting desired photocatalytic activity levels and transparency.

Claims

1. A photocatalytic material comprising a photocatalytic layer comprising tin, and a non-photocatalytic material comprising copper, wherein part of the non-photocatalytic material is in direct contact with the photocatalytic layer, and wherein the photocatalytic layer and the non-photocatalytic material have a volume ratio that is about 3 to about 50.

2. The photocatalytic material of claim 1, wherein the photocatalytic layer comprises SnO₂.

3. The photocatalytic material of claim 1, wherein the non-photocatalytic material comprises copper metal.