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US 11,958,747 B2Granted
Annealed metal nano-particle decorated nanotubes
AssigneesSRI International, United States of America as represented by the Administrator of NASA, Bay Systems Consulting, Inc.
InventorsGabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
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Abstract
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.
Claims20
A composition of matter comprising:
- a first set of carbon nanotubes decorated with polymer-coated metal nanoparticles produced based on a mixture of a carbon nanotube dispersion and 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;
- a first amount of oxygenated functional groups achieved based on an annealing process with a temperature above 300 degrees Celsius, wherein the first amount is within twenty percent of a weight of the composition of matter;
- and
- a first water contact angle achieved based on the annealing process, wherein the first water contact angle is higher than eighty two degrees.
1 more element
A sensor for detecting gas, the sensor comprising:
- an electrode assembly comprising electrodes;
- and
- a gas-adsorbing material disposed between the electrodes of the electrode assembly, wherein the sensor is associated with a detection limit achieved based on an annealing process with a temperature above 300 degrees Celsius;
- and
- wherein the gas-adsorbing material comprises:
- a first set of carbon nanotubes decorated with polymer-coated metal nanoparticles produced based on a mixture of a carbon nanotube dispersion and 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;
- a first amount of oxygenated functional groups achieved based on the annealing process, wherein the first amount is within twenty percent of a weight of the composition of matter;
- and
- a first water contact angle achieved based on the annealing process, wherein the first water contact angle is higher than eighty two degrees.
6 more elements
Dependencies are inferred from the claim text.