Thermal shock synthesis of multielement nanoparticles

Patent metadata

Field	Value
Publication number	US-11193191-B2
Application number	US-201816203223-A
Country	US
Kind code	B2
Filing date	Nov 28, 2018
Priority date	Nov 28, 2017
Publication date	Dec 7, 2021
Grant date	Dec 7, 2021

Abstract

A formation of multielement nanoparticles is disclosed that includes at least three elements. Each of the at least three elements is uniformly distributed within the multielement nanoparticles forming nanoparticles having a homogeneous mixing structure. At least five elements may form a high-entropy nanoparticle structure. A method for manufacturing a formation of multielement nanoparticles includes providing a precursor material composed of the at least three component elements in multielement nanoparticles; heating the precursor material to a temperature and a time; and quenching the precursor to a temperature at a cooling rate to result in a formation of multielement nanoparticles containing at least three elements and the heating and the quenching representing a multielement nanoparticle thermal shock formation process. A corresponding system for manufacturing the formation of multielement nanoparticles and a method of using the multielement nanoparticles are also disclosed.

First claim

What is claimed is:

1. A method for manufacturing a formation of multielement nanoparticles comprising:
distributing a substrate from a first rotational storage structure to a solution storage container;
providing a salt-based solution including a precursor material composed of at least three component elements;
immersing the substrate in the solution storage container that contains the salt-based solution to uniformly coat the salt-based solution on the substrate;
heating the substrate and the precursor material, which have been immersed in the solution storage container, to a first temperature ranging from 500 K to 3000 K for a time duration ranging from 1 millisecond to 1 minute; and
quenching the substrate and the precursor material, which have been immersed in the solution storage container and have been heated to the first temperature for the time duration, to a second temperature at a cooling rate ranging from 10 K/second to 5×10E+6 K/second by transferring the substrate to a second rotational storage structure configured to receive the substrate at a speed sufficient to enable the quenching at the cooling rate,
wherein, after the heating and the quenching, the precursor material results in the formation of a platinum alloy comprising multielement nanoparticles containing the at least three component elements of the precursor material.

2. The method according to claim 1 ,
wherein the salt-based solution includes bulk materials having a size greater than 1 μm and containing the at least three component elements.

3. The method according to claim 1 ,
wherein providing the salt-based solution including the precursor material includes:
depositing uniformly the precursor material on the substrate.

4. The method according to claim 1 ,
wherein the multielement nanoparticles have a particle size ranging from at least three atoms to 1 micrometer.

5. The method according to claim 1 ,
wherein the platinum alloy comprising the multielement nanoparticles containing at least three elements is formed of at least three elements that are metallic elements in Groups 1-15 of the Periodic Table of the Elements.

6. The method according to claim 1 ,
wherein the at least three component elements of the multielement nanoparticles are formed of one of the group consisting of a homogeneous mixing structure, a phase/element separated heterogeneous structure, a metallic glass, a core-shell structure, a metallic glass structure, and a composite structure, or any combination thereof.

7. The method according to claim 1 ,
wherein the at least three component elements of the multielement nanoparticles are formed of one of aggregated nanoparticles, or nanoparticles supported on a substrate.

8. The method according to claim 7 ,
wherein the multielement nanoparticles are supported on a substrate formed of one of at least one carbon-based material, at least one metal, at least one semiconductor, at least one polymer-based material or at least one ceramic, or any combination thereof.

9. The method according to claim 1 ,
wherein the heating is performed in a shock pulsing manner by one of direct Joule heating, radiative heating, conductive heating, microwave heating, laser heating, or plasma heating.

10. The method according to claim 9 ,
wherein the quenching is performed in the shock pulsing manner at a low temperature from 100K to 500K.

11. The method according to claim 1 ,
wherein the heating and the quenching are performed in a gaseous environment that is one of a vacuum, an inert atmosphere, or a reactive atmosphere.

12. The method according to claim 1 ,
wherein the heating and the quenching are repeated at least once.

13. The method according to claim 1 ,
wherein an additional precursor material is applied to the multielement nanoparticles produced by the heating and the quenching, and
wherein the heating and the quenching are repeated at least another time to form a heterogeneous multi-layer structure.

Assignees

• Univ Maryland

Inventors

• Yao Yonggang
• Hu Liangbing

Classifications

• C22F1/002 Primary

  by rapid cooling or quenching; cooling agents used therefor · CPC title

• C22F1/10

  of nickel or cobalt or alloys based thereon · CPC title

• B22F9/24

  starting from liquid metal compounds, e.g. solutions · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title