Graphene gas sensor for measuring the concentration of carbon dioxide in gas environments
US-10024831-B2 · Jul 17, 2018 · US
Ammonia gas detecting sensor using graphene doped with copper oxide nanopaticles and ammonia gas detecting device comprising the same
US11029271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11029271-B2 |
| Application number | US-201916255433-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 23, 2019 |
| Priority date | Oct 19, 2018 |
| Publication date | Jun 8, 2021 |
| Grant date | Jun 8, 2021 |
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- Title
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Abstract
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The present disclosure relates to an ammonia gas detection sensor including a substrate, a graphene sheet disposed on the substrate, and metal nanoparticles disposed on the graphene sheet, and an ammonia gas detection device comprising the gas detection sensor.
First claim
Opening claim text (preview).
What is claimed is: 1. An ammonia gas detection sensor, comprising: a substrate; a graphene sheet disposed on the substrate; and metal nanoparticles disposed on the graphene sheet; wherein the graphene sheet is a monolayer; and wherein the metal nanoparticles include copper oxide (I) (CuO) nanoparticles having a size of 10 nm to 20 nm; wherein the CuO nanoparticles are formed by doping a mixed solution including CuO nanoparticles onto the graphene sheet; and wherein the mixed solution includes 1 wt % to 2 wt % of the CuO nanoparticles based on the total weight. 2. The ammonia gas detection sensor according to claim 1 , wherein the ammonia gas is a gaseous ammonia gas. 3. The ammonia gas detection sensor according to claim 1 , wherein the graphene sheet is deposited on the substrate by a chemical vapor deposition method. 4. The ammonia gas detection sensor according to claim 1 , wherein the doping includes dipping the graphene sheet in the mixed solution and stirring the mixed solution by rotation at 1000 rpm to 2000 rpm. 5. An ammonia gas detection device, comprising: the ammonia gas detection sensor according to claim 1 ; electrodes connected to two ends of the graphene sheet; and a power supply unit which operates the ammonia gas detection sensor. 6. The ammonia gas detection sensor according to claim 1 , wherein the mixed solution is aqueous.
Assignees
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Classifications
Ammonia · CPC title
by chemical vapour deposition [CVD] · CPC title
for detection of gases other than oxygen · CPC title
- G01N27/4071Primary
using sensor elements of laminated structure · CPC title
Oxides; Hydroxides · CPC title
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Frequently asked questions
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- What does patent US11029271B2 cover?
- The present disclosure relates to an ammonia gas detection sensor including a substrate, a graphene sheet disposed on the substrate, and metal nanoparticles disposed on the graphene sheet, and an ammonia gas detection device comprising the gas detection sensor.
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification G01N27/4071. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 08 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).