Nanocomposite magnetic materials for magnetic devices and systems
US-2016172085-A1 · Jun 16, 2016 · US
Metal alloy core-shell nanoparticles and related methods
US11131032B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11131032-B2 |
| Application number | US-201815988527-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 24, 2018 |
| Priority date | May 26, 2017 |
| Publication date | Sep 28, 2021 |
| Grant date | Sep 28, 2021 |
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Abstract
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Metallic nanoparticles and related methods of making and using the same are described herein. An aqueous synthesis method is used to create nanoparticle cores comprising alloys of two or more metals at varying metal:metal molar ratios. In some embodiments, the nanoparticle cores described herein form a homogeneous metal alloy. Alternatively, the nanoparticle cores form a heterogeneous metal alloy. The synthesis method can further comprise forming mixed metal oxide shells on the nanoparticle cores.
First claim
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The invention claimed is: 1. A method of making nanoparticles, the method comprising: providing a core, the core being an alloy formed from two or more metals; and forming a shell on the core, the shell comprising a mixed metal oxide comprising the two or more metals and having a thickness of 0.1-2 nm, wherein forming the shell comprises exposing the core to oxygen during synthesis, and wherein providing the core comprises: creating an aqueous mixture of the two or more metals. 2. The method of claim 1 , wherein the two or more metals comprise iron (Fe) and nickel (Ni). 3. The method of claim 1 , wherein the alloy is devoid of platinum (Pt). 4. The method of claim 1 , wherein the core is a homogeneous alloy. 5. The method of claim 2 , wherein the aqueous mixture further comprises ligand stabilizer for tuning size and/or shape of the nanoparticles.
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Classifications
Submicron particles having a size above 100 nm up to 300 nm · CPC title
Nanosized particles · CPC title
Nanoparticles · CPC title
comprising compounds containing boron, carbon, oxygen or nitrogen · CPC title
Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.] · CPC title
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- What does patent US11131032B2 cover?
- Metallic nanoparticles and related methods of making and using the same are described herein. An aqueous synthesis method is used to create nanoparticle cores comprising alloys of two or more metals at varying metal:metal molar ratios. In some embodiments, the nanoparticle cores described herein form a homogeneous metal alloy. Alternatively, the nanoparticle cores form a heterogeneous metal all…
- Who is the assignee on this patent?
- Univ Arkansas
- What technology area does this patent fall under?
- Primary CPC classification B01J23/755. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 28 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).