- Patent Title: Visible-light-responsive photocatalyst powder, method of manufacturing the same, and visible-light-responsive photocatalytic material, photocatalytic coating material and photocatalytic product each using the same
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Application No.: US12676097Application Date: 2008-09-05
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Publication No.: US09598584B2Publication Date: 2017-03-21
- Inventor: Kayo Nakano , Akira Sato , Yasuhiro Shirakawa , Keiichi Fuse , Masami Okamura
- Applicant: Kayo Nakano , Akira Sato , Yasuhiro Shirakawa , Keiichi Fuse , Masami Okamura
- 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: JP2007-229697 20070905
- International Application: PCT/JP2008/002453 WO 20080905
- International Announcement: WO2009/031317 WO 20090312
- Main IPC: B01J21/00
- IPC: B01J21/00 ; B01J23/00 ; B01J25/00 ; B01J29/00 ; C09D5/16 ; B01J23/30 ; B01J35/00 ; B01J35/10 ; B01J37/14 ; B01J37/34 ; B82Y30/00 ; C01G41/02 ; C09D1/00 ; C09D5/14 ; C09D7/12 ; D01F1/10 ; D06M11/48 ; C08K3/22
Abstract:
A visible-light-responsive photocatalyst powder includes a tungsten oxide powder. When the tungsten oxide powder is measured by X-ray diffractometry, (1) among intensity ratios of a peak A (2θ=22.8 to 23.4°), a peak B (2θ=23.4 to 23.8°), a peak C (2θ=24.0 to 24.25°), and a peak D (2θ=24.25 to 24.5°), an A/D ratio and a B/D ratio each fall within a range of 0.5 to 2.0, and a C/D ratio falls within a range of 0.04 to 2.5, (2) an intensity ratio (E/F) of a peak E (2θ=33.85 to 34.05°) to a peak F (2θ=34.05 to 34.25°) falls within a range of 0.1 to 2.0, and (3) an intensity ratio (G/H) of a peak G (2θ=49.1 to 49.7°) to a peak H (2θ=49.7 to 50.3°) falls within a range of 0.04 to 2.0, and the tungsten oxide powder has a BET specific surface area in a range of 1.5 to 820 m2/g.
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