Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2008-03-28
2010-12-28
McNeil, Jennifer C (Department: 1784)
Stock material or miscellaneous articles
Composite
Of metal
C428S702000, C502S351000, C502S349000, C502S350000, C502S242000, C502S246000, C502S249000, C502S353000
Reexamination Certificate
active
07858201
ABSTRACT:
A titanium oxide-based photocatalyst which can exhibit excellent photocatalytic properties in response to visible light while maintaining its inherent activity in response to ultraviolet light and which is suitable for mass production contains bismuth as a first additional metal component and at least one metal element selected from silicon, zirconium, aluminum, and hafnium as a second additional metal component in titanium oxide. The Bi/Ti atomic ratio is preferably at least 0.0001 and at most 1.0, the atomic ratio of the second additional metal to Ti is preferably at least 0.0001 and at most 0.8, and a portion of bismuth is preferably present in the form of lower valence (Bi2+or Bi0). The presence of lower valence bismuth can be ascertained by XPS analysis.
REFERENCES:
patent: 2002/0077251 (2002-06-01), Okusako et al.
patent: 2002/0169076 (2002-11-01), Takeshi et al.
patent: 2005/0227008 (2005-10-01), Okada et al.
patent: 2005/0266235 (2005-12-01), Nakajima et al.
patent: 1504816 (2005-03-01), None
patent: 09262482 (1997-07-01), None
patent: 2001205103 (2001-07-01), None
patent: 2003073820 (2003-12-01), None
patent: 2004130188 (2004-04-01), None
patent: 2004275999 (2004-07-01), None
patent: 2004043282 (2004-12-01), None
patent: 01/10552 (2001-02-01), None
patent: WO03/080244 (2005-10-01), None
S. Neeraj et al., “A new route for the synthesis of open-framework metal phosphates using organophosphates”, Chem. Commun., 2001, 2716-2717, first published as an Advance Article on the web Dec. 6, 2001.
Antonio Gulino et al., “Low-Temperature Stabilization of Tetragonal Zirconia by Bismuth”, Chem. Mater. 1996, 8, 1287-1291.
W.F. Yao et al., “Sillenites materials as novel photocatalysts for methyl orange decomposition”, Chemical Physics Letters 377 (2003) 501-506.
Shinri Sato, “Photocatalytic Activity of NOx-Doped TiO2 in the Visible Light Region”, Chemical Physics Letters, vol. 123, No. 1,2; Jan. 3, 1986, 126-128.
X. H. Xu et al., “Preparation and characterization of Bi-doped TiO2 photocatalyst”, Journal of Materials Science Letters, 21, 2002, 1655-1656.
Vineet S. Dharmadhikari et al., “Characterisation of Thin Films of Bismuth Oxide by X-Ray Photoelectron Spectroscopy”, Journal of Electron Spectroscopy and Related Phenomena, 25 (1982) 181-189, Elsevier Scientific Publishing Company, Amsterdam.
Hiroyuka Noda et al., “Perparation of Titanium (IV) Oxides and its Characterisation”, Journal of Japan Chemical Society, 1986 (8), p. 1084-1090z.
Fukuda Tadashi
Katsui Rie
Masaki Yasuhiro
Nishihara Katsuhiro
Katz Vera
McNeil Jennifer C
Sumitomo Metal Industries Ltd.
The Webb Law Firm
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