Copper nanoparticle-titania composite nanoarchitectures

Patent metadata

Field	Value
Publication number	US-11027258-B2
Application number	US-201715472782-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 29, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A composition having: titania aerogel having titania nanoparticles and copper nanoparticles. Each of the copper nanoparticles is in contact with more than one of the titania nanoparticles. A method of: providing a titania aerogel, and forming or depositing copper nanoparticles onto the surface of the titania aerogel.

First claim

What is claimed is:

1. A composition comprising:
titania aerogel comprising titania nanoparticles;
wherein the aerogel has a continuous mesoporous network; and

catalytic nanoparticles comprising metallic copper;
wherein the catalytic nanoparticles are distributed throughout the titania aerogel; and
wherein each of the catalytic nanoparticles is in contact with more than one of the titania nanoparticles.

2. The composition of claim 1 , wherein the catalytic nanoparticles comprise less than 15 wt % copper oxide.

3. The composition of claim 1 , wherein the catalytic nanoparticles are free of stabilizing ligands.

4. The composition of claim 1 , wherein the composition is made by a method comprising:
providing the titania aerogel;
forming or depositing the catalytic nanoparticles onto the titania aerogel.

5. The composition of claim 4 , wherein the catalytic nanoparticles are formed by photodeposition.

6. The composition of claim 1 , wherein the titania nanoparticles are 10-15 nm in size.

7. A method comprising:
providing the composition of claim 1 ;
performing a surface plasmon resonance-driven reaction on the composition.

8. The method of claim 7 , wherein the reaction is oxidation of an alcohol.

9. The method of claim 7 , wherein the reaction is oxidation of methanol.

10. The method of claim 7 , wherein the reaction is oxidation of water.

11. The method of claim 7 , wherein the reaction is oxidation of ethylene or propene.

12. A method comprising:
providing the composition of claim 1 ;
performing a catalyzed reaction on the composition.

13. The method of claim 12 , wherein the reaction is oxidation of ethylene or propene.

14. A method comprising:
providing a titania aerogel comprising titania nanoparticles;
wherein the aerogel has a continuous mesoporous network; and

forming or depositing catalytic nanoparticles comprising metallic copper onto the titania aerogel;
wherein the catalytic nanoparticles are distributed throughout the titania aerogel; and
wherein each of the catalytic nanoparticles is in contact with more than one of the titania nanoparticles.

15. The method of claim 14 , wherein the catalytic nanoparticles are formed by photodeposition.

Assignees

• Us Gov Sec Navy

Inventors

• Pietron Jeremy J
• Desario Paul A
• Rolison Debra R
• Brintlinger Todd H
• Stroud Rhonda Michele

Classifications

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J2235/15

  X-ray diffraction · CPC title

• B01J2235/00

  Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties · CPC title

• B01J35/45

  Nanoparticles · CPC title

• B01J35/393

  Metal or metal oxide crystallite size · CPC title