Nanoparticle assembly for catalytic hydrogen sensing
AssigneeWayne State University
InventorsLong Luo, Xin Geng
Life of this patent
Estimating the term…
Abstract
Nanoparticle assemblies can be formed and deposited on temperature sensors to create low cost, high sensitivity hydrogen sensors. The nanoparticle assemblies can be formed from nanoparticles within an electrolysis reactor to form grain-boundary connections between the nanoparticles of the nanoparticle assembly. The nanoparticle assembly can be deposited on temperature sensors to create hydrogen gas sensors.
Claims27
A method comprising:
- receiving, within a receptacle of an electrolysis reactor, a solvent that contains platinum nanoparticles suspended within the solvent by a ligand compound;
- activating a first electrode and a second electrode of the electrolysis reactor to apply a voltage to the solvent;
- and
- determining, based at least on a state of the solvent, that individual platinum nanoparticles have assembled into a nanoparticle assembly, the platinum nanoparticles of the nanoparticle assembly connected via one or more grain-boundaries.
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15-20. (canceled)
A system comprising:
- a hydrogen source that provides hydrogen via a fluid valve and a hydrogen line;
- a hydrogen sensor controller that is associated with the hydrogen source and determines whether at least one of the hydrogen source is leaking an amount of the hydrogen exceeding a threshold value;
- a hydrogen sensor that is associated with hydrogen source and the fluid valve, the hydrogen sensor comprising:
- a temperature sensor that is associated with the hydrogen source and the hydrogen sensor controller;
- and
- a nanoparticle assembly coating that is applied to the temperature sensor, the nanoparticle assembly coating comprised of a nanoparticle assembly that generates thermal energy when exposed to the hydrogen from the hydrogen source;
- and
- wherein, the hydrogen sensor transmits an indication of temperature, generated by the temperature sensor from the thermal energy generated by the nanoparticle assembly coating, to the hydrogen sensor controller, the indication causing the hydrogen sensor controller to determine the amount of the hydrogen that is leaking and whether the amount of the hydrogen exceeds the threshold value.
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A method comprising:
- receiving, within an electrolysis reactor, a solvent that contains platinum nanoparticles that are suspended within a first solvent and are stabilized by a ligand compound;
- activating, at a first time, a first electrode and a second electrode of the electrolysis reactor to apply a voltage to the solvent;
- determining, based at least on the solvent, that platinum nanoparticles of the amount have been assembled to form a nanoparticle assembly, the platinum nanoparticles of the nanoparticle assembly connected via one or more grain-boundaries;
- extracting the nanoparticle assembly from the solvent, the nanoparticle assembly being purified to obtain a nanoparticle assembly powder;
- mixing the nanoparticle assembly powder with a second solvent to form a nanoparticle slurry;
- forming a hydrogen sensor from a temperature sensor and the nanoparticle slurry, wherein the temperature sensor is coated with the nanoparticle assembly to create the hydrogen sensor.
The method of claim 3027, wherein the second solvent is evaporated from the nanoparticle slurry that coats the temperature sensor to deposit the nanoparticle assembly on the temperature sensor.
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Dependencies are inferred from the claim text.