Quaternary oxides and catalysts containing quaternary oxides

• US 7,901,660 B2
• Filed: 12/22/2006
• Issued: 03/08/2011
• Est. Priority Date: 12/29/2005
• Status: Expired due to Fees

• Current Assignee: Board of Trustees of The University of Illinois
• Original Assignee: Board of Trustees of The University of Illinois
• Inventors: Xie, Rong-Cai, Shang, Jian-Ku, Wu, Pinggui
• Primary Examiner(s): Silverman; Stanley
• Assistant Examiner(s): Zimmer; Anthony J
• Application Number:
  US11/615,711
• Publication Number:
  US 20070190765A1
• Time in Patent Office: 1,537 Days
• Field of Search: 502/200, 502/202, 502/207, 502/216, 502/222, 502/223, 502/325, 502/337, 502/339, 502/350, 502/344, 502/345, 423/385, 423/592.1, 423/598, 423/604
• US Class Current: 423/598
• CPC Class Codes: A61L 2/084 Visible light
• CPC Class Codes: A61L 9/205 using a photocatalyst or photosensitiser
• CPC Class Codes: B01J 21/06 Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
• CPC Class Codes: B01J 21/063 Titanium; Oxides or hydroxides thereof
• CPC Class Codes: B01J 23/02 of the alkali- or alkaline earth metals or beryllium
• CPC Class Codes: B01J 23/10 of rare earths
• CPC Class Codes: B01J 23/44 Palladium
• CPC Class Codes: B01J 23/50 Silver
• CPC Class Codes: B01J 23/70 of the iron group metals or copper
• CPC Class Codes: B01J 23/72 Copper
• CPC Class Codes: B01J 27/24 Nitrogen compounds
• CPC Class Codes: B01J 35/39 Photocatalytic properties
• CPC Class Codes: B01J 37/0215 Coating
• CPC Class Codes: B01J 37/0225 of metal substrates
• CPC Class Codes: B01J 37/033 Using Hydrolysis
• CPC Class Codes: B01J 37/10 in the presence of water, e.g. steam
• CPC Class Codes: C01B 3/042 Decomposition of water
• CPC Class Codes: C01G 23/047 Titanium dioxide
• CPC Class Codes: C01G 23/053 Producing by wet processes, e.g. hydrolysing titanium salts
• CPC Class Codes: C01P 2002/52 containing elements as dopants
• CPC Class Codes: C01P 2006/40 : Electric properties
• CPC Class Codes: C02F 2305/10 : Photocatalysts
• CPC Class Codes: C03C 17/225 : Nitrides
• CPC Class Codes: C03C 17/256 : Coating containing TiO2
• CPC Class Codes: C03C 2217/212 : TiO2
• CPC Class Codes: C03C 2217/24 : Doped oxides
• CPC Class Codes: C03C 2217/71 : Photocatalytic coatings
• CPC Class Codes: C03C 2218/116 : by spin-coating, centrifugation
• CPC Class Codes: Y02E 60/36 : Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

A quaternary oxide includes a dopant metal, a dopant nonmetal, titanium, and oxygen. The atomic ratio of titanium, oxygen and dopant nonmetal may be 1:0.5-1.99:0.01-1.5. Quaternary oxides may be used in catalytic compositions, in coatings for disinfecting surfaces and in coatings for self-cleaning surfaces. A method of making a quaternary oxide includes combining ingredients including a titanium source, a dopant nonmetal source, a dopant metal salt, and a polar organic solvent to form a reaction mixture; and heating the reaction mixture.

Claims

1. A quaternary oxide, comprising:

a dopant metal,

a dopant nonmetal,

titanium, and

oxygen;

where the atomic ratio of titanium, oxygen and dopant nonmetal is 1;

0.5-1.99;

0.01-1.5,

the dopant metal is selected from the group consisting of copper, palladium, and silver, and

the dopant metal is present in the oxide at a concentration of at most 2 percent by weight.

2. The quaternary oxide of claim 1, where the dopant nonmetal is nitrogen.

3. The quaternary oxide of claim 1, where the dopant metal is palladium.