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Annealed metal nano-particle decorated nanotubes
US11072531B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11072531-B2 |
| Application number | US-201715853432-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 22, 2017 |
| Priority date | Dec 22, 2017 |
| Publication date | Jul 27, 2021 |
| Grant date | Jul 27, 2021 |
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- Title
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Abstract
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Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
First claim
Opening claim text (preview).
What is claimed is: 1. A method comprising: decorating carbon nanotubes with polymer coated metal nanoparticles by mixing a carbon nanotube dispersion with a polymer coated metal nanoparticle dispersion, wherein the polymer coating attaches the metal nanoparticles to the carbon nanotubes and reduces adsorption of water vapor by the metal nanoparticles; and annealing the carbon nanotubes decorated with the polymer coated metal nanoparticles to decrease a quantity of hydrophilic components of the polymer coating. 2. The method of claim 1 , wherein the metal nanoparticles comprise a metal selected from a group comprising palladium, iridium, rhodium, platinum, copper, nickel, chromium, ruthenium, silver and gold. 3. The method of claim 2 wherein the metal nanoparticles comprise an alloy of two or more of the metals selected from a group comprising palladium, iridium, rhodium, platinum, copper, nickel, chromium, ruthenium, silver and gold. 4. The method of claim 2 , wherein the metal nanoparticles are produced by using a mixture of two or more salts of two or more metal ion salts, wherein ions in the two or more metal ion salts are in a group comprising palladium, iridium, rhodium, platinum, copper, nickel, chromium, ruthenium, silver and gold ions. 5. The method of claim 1 wherein the carbon nanotubes contain, in weight, up to 5% oxygenated functional groups. 6. The method of claim 1 , wherein the carbon nanotubes comprise single-walled carbon nanotubes. 7. The method of claim 1 , wherein a polymer layer of the polymer coated metal nanoparticles comprises polyvinylpyrrolidone, and wherein the metal nanoparticles comprise palladium or platinum. 8. The method of claim 1 , wherein the annealed carbon nanotubes decorated with the polymer coated metal nanoparticles are hydrophobic. 9. The method of claim 1 , wherein annealing the carbon nanotubes decorated with the polymer coated metal nanoparticles is performed at above 350° C. 10. The method of claim 1 , wherein annealing the carbon nanotubes decorated with the polymer coated metal nanoparticles is performed in a vacuum or inert gas environment.
Assignees
Inventors
Classifications
of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid {, for detecting components in the fluid} · CPC title
Cutting · CPC title
specially adapted to detect a particular component (physical analysis of gaseous biological material G01N33/497) · CPC title
- C01B32/168Primary
After-treatment · CPC title
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Frequently asked questions
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- What does patent US11072531B2 cover?
- Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
- Who is the assignee on this patent?
- Palo Alto Res Ct Inc, Us Administrator Of The Nasa, Bay Systems Consulting Inc
- What technology area does this patent fall under?
- Primary CPC classification C01B32/168. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 27 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).