Metallic nanowires and methods thereof

Patent metadata

Field	Value
Publication number	US-11931810-B2
Application number	US-202217656065-A
Country	US
Kind code	B2
Filing date	Mar 23, 2022
Priority date	Mar 29, 2021
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

Aspects relate to method of zinc-comprising nanowire fabrication, the method comprising forming a starting material comprising zinc metal or zinc metal alloy and at least one reactive metal, and exposing the starting material to one or more alcohols to obtain a reaction product comprising zinc-comprising nanowires, wherein the at least one reactive metal is more reactive than zinc to the one or more alcohols.

First claim

The invention claimed is:

1. A method of zinc-comprising nanowire fabrication, the method comprising:
(a) providing a starting material comprising zinc metal or zinc metal alloy and at least one reactive metal; and
(b) exposing the starting material to one or more alcohols to obtain a reaction product comprising zinc-comprising nanowires,
wherein the at least one reactive metal is more reactive than zinc to the one or more alcohols, and
wherein the starting material comprises zinc at an atomic fraction of about 10 at. % or greater and less than 100 at. %.

2. The method of claim 1 , wherein:
the zinc metal alloy comprises one or more of copper (Cu), aluminum (Al), magnesium (Mg), nickel (Ni), and titanium (Ti).

3. The method of claim 1 , wherein:
the reaction product additionally comprises a residual liquid comprising the at least one reactive metal and the one or more alcohols; and
the method additionally comprises:
(c) separating the zinc-comprising nanowires from the residual liquid.

4. The method of claim 1 , wherein the at least one reactive metal comprises Li.

5. The method of claim 1 , wherein the atomic fraction is selected to be below about 50 at. %.

6. The method of claim 1 , wherein the one or more alcohols are selected from 1 -propanol (C 3 H 7 OH), 2-propanol (C 3 H 7 OH), or a combination thereof.

7. The method of claim 1 , wherein the (b) exposing of the starting material to the one or more alcohols is conducted under a given pressure, and the given pressure is in a range from about 0.1 atm. to about 20 atm.

8. The method of claim 1 , wherein the (b) exposing of the starting material to the one or more alcohols is conducted under a given temperature, and the given temperature is in a range from about 0° C. to about 100° C.

9. The method of claim 1 , wherein the zinc-comprising nanowires comprise zinc metal nanowires or zinc metal alloy nanowires or a combination thereof.

10. The method of claim 1 , wherein the zinc-comprising nanowires comprise zinc ceramic nanowires.

11. The method of claim 1 , wherein:
the zinc-comprising nanowires comprise nanowires comprising zinc alkoxide.

12. The method of claim 11 , wherein:
the zinc alkoxide-comprising nanowires comprise zinc propoxide nanowires and/or zinc isopropoxide nanowires.

13. The method of claim 1 , wherein the zinc-comprising nanowires comprise a porous zinc-comprising nanowire.

14. The method of claim 13 , wherein a specific surface area of the porous zinc-comprising nanowire is in a range from about 5 to about 500 m 2 /g.

15. The method of claim 1 , wherein an aspect ratio of at least one of the zinc- comprising nanowires is in a range from about 1:10 to about 1:100,000.

16. The method of claim 1 , wherein:
the atomic fraction is selected to be below about 80 at. %.

17. A method of zinc-comprising nanowire fabrication, the method comprising:
(a) providing a starting material comprising zinc metal or zinc metal alloy and at least one reactive metal;
(b) exposing the starting material to one or more alcohols to obtain a reaction product comprising zinc-comprising nanowires and a residual liquid comprising the at least one reactive metal and the one or more alcohols;
(c) separating the zinc-comprising nanowires from the residual liquid; and
(d) chemically reducing the zinc-comprising nanowires by exposing the zinc-comprising nanowires to a chemically reducing environment,
wherein the at least one reactive metal is more reactive than zinc to the one or more alcohols.

18. The method of claim 17 , wherein:
the chemically reducing environment comprises a gaseous or liquid environment comprising a chemically reducing agent.

19. The method of claim 18 , wherein the chemically reducing agent is selected from lithium aluminum hydride (LiA1H 4 ), sodium bis(2-methoxyethoxy) aluminum hydride (NaA1H 2 (OCH 2 CH 2 OCH 3 ) 2 ), hydrogen, lithium borohydride (LiBH 4 ), sodium borohydride (NaBH 4 ), iron sulfate, or a combination thereof.

Assignees

• Sila Nanotechnologies Inc
• Georgia Tech Res Inst

Inventors

• Yushin Gleb
• Hu Wenqiang
• Jhulki Samik
• Fu Wenbin
• Turcheniuk Kostiantyn

Classifications

• B22F9/22 Primary

  using gaseous reductors · CPC title

• B22F1/0547

  Nanofibres or nanotubes · CPC title

• B22F1/062

  Fibrous particles · CPC title

• B22F9/20

  starting from solid metal compounds · CPC title

• C07F3/06

  Zinc compounds · CPC title