Title:
VISIBLE-LIGHT PHOTOCATALYST PARTICLES AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2013/180307
Kind Code:
A1
Abstract:
Visible-light photocatalyst particles having both high crystallinity and refined primary particles are disclosed. A photocatalyst composed of secondary particles having high porosity in which very small primary particles have aggregated is also disclosed. Rhodium-doped strontium titanate, which is the visible-light photocatalyst of the present invention, has high water-splitting activity as a photocatalyst by having primary particles with a diameter of 70 nm or less, and a photoabsorption ratio of 0.6 or higher at a wavelength of 570 nm and a photoabsorption ratio of 0.7 or less at a wavelength of 1800 nm as measured using a diffuse reflectance spectrum.
Inventors:
TOKUDOME HIROMASA (JP)
OKUNAKA SAYURI (JP)
OKUNAKA SAYURI (JP)
Application Number:
PCT/JP2013/065519
Publication Date:
December 05, 2013
Filing Date:
May 29, 2013
Export Citation:
Assignee:
TOTO LTD (JP)
International Classes:
B01J35/02; B01J23/58; B01J37/08; C01B3/04; C01G23/00
Foreign References:
| JP2006182615A | 2006-07-13 | |||
| JP2004008963A | 2004-01-15 | |||
| JP2012056947A | 2012-03-22 |
Other References:
YOSHIHIRO UEDA ET AL.: "Shuju no Yoeki Kagakuho ni yoru Ph-Dope SrTi03 Kashiko Otogata Hikari Shokubai no Gosei to Kokasseika", PROCEEDINGS OF 19TH FALL MEETING OF THE CERAMIC SOCIETY OF JAPAN, 19 September 2006 (2006-09-19), pages 78, XP008175431
YASUYOSHI SASAKI ET AL.: "Shuju no Hoho ni yori Chosei shita SrTi03: Rh Hikari Shokubai o Mochiita Co Sakutai Denshi Dentatsukei Z Scheme -gata Hikari Shokubai ni yoru Mizu no Kashiko Zenbunkai", 87TH ANNUAL MEETING OF THE CHEMICAL SOCIETY OF JAPAN IN SPRING, 12 March 2007 (2007-03-12), pages 498, XP008175448
SASAKI Y ET AL.: "Solar Water Splitting Using Powdered Photocatalysts Driven by Z-Schematic Interparticle Electron Transfer without an Electron Mediator", J. PHYS. CHEM., vol. 113, 2009, pages 17536 - 17542, XP055175727
SASAKI ET AL., J. PHYS. CHEM. C, 2009, pages 17536 - 17542
CRONEMEYER ET AL., PHYS. REV., vol. 113, 1959, pages 1222 - 1225
See also references of EP 2857097A4
YASUYOSHI SASAKI ET AL.: "Shuju no Hoho ni yori Chosei shita SrTi03: Rh Hikari Shokubai o Mochiita Co Sakutai Denshi Dentatsukei Z Scheme -gata Hikari Shokubai ni yoru Mizu no Kashiko Zenbunkai", 87TH ANNUAL MEETING OF THE CHEMICAL SOCIETY OF JAPAN IN SPRING, 12 March 2007 (2007-03-12), pages 498, XP008175448
SASAKI Y ET AL.: "Solar Water Splitting Using Powdered Photocatalysts Driven by Z-Schematic Interparticle Electron Transfer without an Electron Mediator", J. PHYS. CHEM., vol. 113, 2009, pages 17536 - 17542, XP055175727
SASAKI ET AL., J. PHYS. CHEM. C, 2009, pages 17536 - 17542
CRONEMEYER ET AL., PHYS. REV., vol. 113, 1959, pages 1222 - 1225
See also references of EP 2857097A4
Attorney, Agent or Firm:
KONNO, Akio et al. (JP)
Akio Konno (JP)
Akio Konno (JP)
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