Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2007-02-16
2010-12-07
Hailey, Patricia L (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S224000, C502S227000, C502S228000, C502S309000, C502S310000, C502S312000, C502S314000, C502S316000, C502S324000, C502S338000, C502S349000, C502S350000, C423S610000, C423S611000, C423S612000, C210S634000, C210S644000, C210S649000, C210S651000, C210S652000, C210S681000, C210S683000
Reexamination Certificate
active
07846864
ABSTRACT:
New types of photocatalyst materials are disclosed together with methods for preparing and using these materials, as well as air treatment systems incorporating such materials. The photocatalyst materials of this invention consist essentially of very small particles of a first-metal oxide, the first-metal being a metal that exhibits photo-induced semiconductor properties, having ions of a second-metal dispersed throughout its lattice structure, the second-metal being selected from the group of dopant metals. Such photocatalyst materials are prepared by the steps of mixing first-metal and second-metal precursors, removing nonessential ions from the mixture, drying the resulting product, and calcinating the dried product to produce the completed photocatalyst material.
REFERENCES:
patent: 3280040 (1966-10-01), Jaffe
patent: 4944936 (1990-07-01), Lawhorne
patent: 5827339 (1998-10-01), Nagafune et al.
patent: 5846511 (1998-12-01), Kim et al.
patent: 6224884 (2001-05-01), Remy
patent: 6365007 (2002-04-01), Willner et al.
patent: 6627173 (2003-09-01), Hemme et al.
patent: 7521394 (2009-04-01), Xie et al.
patent: 7601326 (2009-10-01), Torardi
patent: 2005/0129591 (2005-06-01), Wei et al.
patent: 2006/0024228 (2006-02-01), Liang et al.
patent: 2006/0110316 (2006-05-01), Torardi
patent: 2007/0154561 (2007-07-01), Takeda et al.
patent: 2008/0031832 (2008-02-01), Wakefield et al.
patent: 8-52360 (1996-02-01), None
patent: 9-47661 (1997-02-01), None
patent: 09-192496 (1997-07-01), None
patent: 10-106908 (1998-04-01), None
patent: 1999-0048895 (1999-07-01), None
patent: 2001-0103164 (2001-11-01), None
patent: 10-2004-0025176 (2004-03-01), None
patent: 2004-0025176 (2004-03-01), None
patent: 2004-0105086 (2004-12-01), None
patent: 10-2005-0075927 (2005-07-01), None
patent: 2005-0075927 (2005-07-01), None
patent: 2007-0108122 (2007-11-01), None
“Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions,” Nadica D. Abazovic et al. Nanoscalse Res Lett (2009) 4:518-525 (pp. 518-525).
“Preparation and photoactivity of nanostructured TiO2 particles obtained by hydrolysis of TiCl4,” Maurizio Addamo et al. Colloids and Surfaces A: Physicochem. Eng. Aspects 265 (2005), pp. 23-31.
“The effect of iron doping on the adsorption of methanol on TiO2 probed by sum frequency generation,” Nkengafeh Asong et al. Chemical Physics 339 (2007), pp. 86-93.
“Photocatalytic behaviour of metal-loaded TiO2 aqueous dispersions and films,” M. Bellardita et al. Chemical Physics 339 (2007), pp. 94-103.
“Preparation and Characterization of Quantum-Size Titanium Dioxide,” Claudius Kormann, et al. J. Phys. Chem. 1988, 92, pp. 5196-5201.
“Photocatalytic properties of iron-doped titania semiconductors,” M. I. Litter et al. Journal of Photochemistry and Photobiology A: Chemistry 98 (1996), pp. 171-181.
“Preparation and characterization of TiO2/Fe2O3 binary mixed oxides and its photocatalytic properties,” Bonamali Pal et al. Materials Chemistry and Physics 59 (1999), pp. 254-261.
“A comparative study of nanometer sized Fe(III)-doped TiO2 photocatalysts: synthesis, characterization and activity,” Chuan-yi Wang et al. Journal of Materials Chemistry, 2003, 13, pp. 2322-2329.
Linsebigler, et al., Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results, Chemical Reviews, 1995, pp. 735-758, vol. 95, No. 3, American Chemical Soc.
Choi Kwang Min
Ham Dong Seok
Ihm Son Ki
Jeong Kwang Eun
Park Joo Il
Hailey Patricia L
Mills & Onello LLP
Samsung Electronics Co,. Ltd.
LandOfFree
Photocatalyst materials having semiconductor characteristics... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photocatalyst materials having semiconductor characteristics..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photocatalyst materials having semiconductor characteristics... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4162832