- Patent Title: Visible-light-responsive photocatalyst powder, and visible-light-responsive photocatalytic material, photocatalytic coating material and photocatalytic product each using the same
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Application No.: US12676099Application Date: 2008-09-05
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Publication No.: US09670369B2Publication Date: 2017-06-06
- Inventor: Kayo Nakano , Akira Sato , Yasuhiro Shirakawa , Keiichi Fuse , Masami Okamura , Shinya Kasamatsu
- Applicant: Kayo Nakano , Akira Sato , Yasuhiro Shirakawa , Keiichi Fuse , Masami Okamura , Shinya Kasamatsu
- Applicant Address: JP Tokyo JP Yokohama-Shi
- Assignee: KABUSHIKI KAISHA TOSHIBA,TOSHIBA MATERIALS CO., LTD.
- Current Assignee: KABUSHIKI KAISHA TOSHIBA,TOSHIBA MATERIALS CO., LTD.
- Current Assignee Address: JP Tokyo JP Yokohama-Shi
- Agency: Foley & Lardner LLP
- Priority: JP2007-229698 20070905
- International Application: PCT/JP2008/002452 WO 20080905
- International Announcement: WO2009/031316 WO 20090312
- Main IPC: B01J23/30
- IPC: B01J23/30 ; C09D7/12 ; B01J23/652 ; B01J23/68 ; B01J23/888 ; B01J35/00 ; B01J37/02 ; B01J37/34 ; B82Y30/00 ; C01G41/04 ; C09D5/16 ; B01J35/02 ; B01J35/10 ; C08K3/22
Abstract:
A visible-light-responsive photocatalyst powder includes a tungsten oxide powder. The tungsten oxide powder has color whose a* is −5 or less, b* is −5 or more, and L* is 50 or more when the color of the powder is expressed by an L*a*b* color system. Further, the tungsten oxide powder has a BET specific surface area in a range of 11 to 820 m2/g.
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