Tungsten comprising nanomaterials and related nanotechnology

• US 7,708,974 B2
• Filed: 05/10/2005
• Issued: 05/04/2010
• Est. Priority Date: 12/10/2002
• Status: Expired due to Fees

• Current Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Yadav, Tapesh
• Primary Examiner(s): Green; Anthony J
• Assistant Examiner(s): Parvini; Pegah
• Application Number:
  US11/125,316
• Publication Number:
  US 20050271566A1
• Time in Patent Office: 1,820 Days
• Field of Search: 423/1, 423/604, 423/592.1, 423/594.18, 423/608, 423/618, 423/622, 423/594.13, 423/606, 428/204, 428/402, 428/195.1, 428/206, 429/30, 429/44, 502/339, 252/514, 250/462.1, 247/106, 347/106, 977811-812
• US Class Current: 423/594.13
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C01G 41/00 Compounds of tungsten
• CPC Class Codes: C01P 2004/64 Nanometer sized, i.e. from 1-100 nanometer
• CPC Class Codes: C01P 2006/12 Surface area
• CPC Class Codes: C09C 1/00 Treatment of specific inorganic materials other than fibrous fillers tenebrescent materials C09K9/00; luminescent materials C09K11/00; Preparation of carbon black
• CPC Class Codes: Y10S 977/811 Of specified metal oxide composition, e.g. conducting or semiconducting compositions such as ITO, ZnOx
• CPC Class Codes: Y10S 977/812 Perovskites and superconducting composition, e.g. BaxSr1-xTiO3
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]

Abstract

Nanoparticles comprising tungsten, methods of manufacturing nanoparticles comprising tungsten, and applications of nanoparticles comprising tungsten, such as electronics, optical devices, photonics, reagents for fine chemical synthesis, pigments, and catalysts are provided.

Claims

1. A nanomaterial composition of matter comprising

(a) non-stoichiometric nanoparticles of tungsten oxide, and

(b) at least one metal other than tungsten, wherein the composition comprises a tungsten bronze.

2. The nanomaterial composition of matter of claim 1, wherein the at least one metal other than tungsten is sodium.

3. The nanomaterial composition of matter of claim 1, wherein the at least one metal other than tungsten is selected from barium, zinc, calcium, tin, and combinations thereof.

4. The nanomaterial composition of matter of claim 1, further comprising oxygen.

5. The nanomaterial composition of matter of claim 1, wherein the nanomaterial composition comprises non-agglomerated nanoparticles.

6. The nanomaterial composition of matter of claim 1, wherein the nanomaterial composition comprises nanoparticles having non-functionalized surfaces.

7. The nanomaterial composition of matter of claim 1, wherein the nanomaterial composition comprises nanoparticles having functionalized or modified surfaces.

8. The nanomaterial composition of matter of claim 7, wherein the functionalized surfaces comprise fatty acids, propionic acid, stearic acid, oils and combinations thereof.

9. The nanomaterial composition of matter of claim 7, wherein the functionalized surfaces comprise organometallics comprising silicon or titanium.

10. The nanomaterial composition of matter of claim 1, wherein the nanomaterial composition comprises particles having a mean particle size of less than 100 nanometers.

11. A nanomaterial composition of matter comprising

(a) non-stoichiometric nanoparticles of tungsten oxide, and

(b) at least one metal other than tungsten, wherein the at least one metal other than tungsten is sodium.