Synthesis of magnetic carbon nanoribbons and magnetic functionalized carbon nanoribbons

Patent metadata

Field	Value
Publication number	US-9449743-B2
Application number	US-201314374591-A
Country	US
Kind code	B2
Filing date	Jan 28, 2013
Priority date	Jan 27, 2012
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

Various embodiments of the present disclosure pertain to methods of making magnetic carbon nanoribbons. Such methods generally include: (1) forming carbon nanoribbons by splitting carbon nanomaterials; and (2) associating graphene nanoribbons with magnetic materials, precursors of magnetic materials, or combinations thereof. Further embodiments of the present disclosure also include a step of reducing the precursors of magnetic materials to magnetic materials. In various embodiments, the associating occurs before, during or after the splitting of the carbon nanomaterials. In some embodiments, the methods of the present disclosure further comprise a step of (3) functionalizing the carbon nanoribbons with functionalizing agents. In more specific embodiments, the functionalizing occurs in situ during the splitting of carbon nanomaterials. In further embodiments, the carbon nanoribbons are edge-functionalized. Additional embodiments of the present disclosure pertain to magnetic carbon nanoribbon compositions that were formed in accordance with the methods of the present disclosure.

First claim

What is claimed is:

1. A method of making magnetic carbon nanoribbons, wherein the method comprises:
forming carbon nanoribbons by splitting carbon nanomaterials; and
associating carbon nanoribbons with magnetic materials, precursors of magnetic materials, or combinations thereof,
wherein the associating occurs before or after the splitting of the carbon nanomaterials.

2. The method of claim 1 , further comprising a step of functionalizing the carbon nanoribbons with one or more functionalizing agents.

3. The method of claim 2 , wherein the functionalizing agents are selected from the group consisting of alkyl groups, haloalkanes, iodoalkanes, hexadecyl groups, octyl groups, butyl groups, oxides, epoxides, alcohols, halides, aldehydes, ketones, esters, enones, nitriles, silyl chlorides, monomers, vinyl monomers, CO 2 , CS 2 , and combinations thereof.

4. The method of claim 3 , wherein the functionalizing agents comprise monomers.

5. The method of claim 3 , wherein the monomers are selected from the group consisting of vinyl monomers, amines, alkenes, alkanes, carbohydrates, epoxides, and combinations thereof.

6. The method of claim 3 , wherein the monomers comprise vinyl monomers.

7. The method of claim 3 , wherein the monomers comprise epoxides.

8. The method of claim 2 , wherein the functionalizing occurs in situ during the splitting of the carbon nanomaterials.

9. The method of claim 2 , wherein the functionalizing forms edge-functionalized carbon nanoribbons.

10. The method of claim 4 , wherein the functionalizing forms polymer-functionalized carbon nanoribbons.

11. The method of claim 10 , wherein the polymer-functionalized carbon nanoribbons are edge-functionalized.

12. The method of claim 1 , wherein the splitting occurs by exposure of the carbon nanomaterials to sodium, potassium, lithium, or combinations thereof.

13. The method of claim 1 , wherein the associating comprises heating carbon nanomaterials in the presence of magnetic materials, precursors of magnetic materials, or combinations thereof.

14. The method of claim 1 , wherein the associating comprises intercalating carbon nanoribbons with magnetic materials, precursors of magnetic materials, or combinations thereof.

15. The method of claim 1 , wherein the carbon nanomaterials are selected from the group consisting of single-walled carbon nanotubes, multi-walled carbon nanotubes, double-walled carbon nanotubes, triple-walled carbon nanotubes, few-walled carbon nanotubes, ultra-short carbon nanotubes, graphite, and combinations thereof.

16. The method of claim 1 , wherein the carbon nanomaterials comprise multi-walled carbon nanotubes.

17. The method of claim 1 , wherein the carbon nanoribbons are associated with precursors of magnetic materials.

18. The method of claim 17 , wherein the precursors of magnetic materials comprise ferromagnetic precursors or ferrimagnetic precursors.

19. The method of claim 17 , wherein the precursors of magnetic materials comprise FeCl 3 .

20. The method of claim 17 , further comprising a step of reducing the precursors of magnetic materials, wherein the reducing forms magnetic materials.

21. The method of claim 1 , wherein the magnetic materials are selected from the group consisting of metal salts, alkali metals, metal carboxylates, metals, metallic alloys, metal oxides, and combinations thereof.

22. The method of claim 1 , wherein the magnetic materials are selected from the group consisting of lithium, sodium, potassium, cesium, rubidium, calcium, cobalt, nickel, copper, iron, manganese, gadolinium, yttrium, chromium, dysprosium, europium, alloys thereof, and combinations thereof.

23. The method of claim 1 , wherein the associating occurs while the magnetic materials or precursors of magnetic materials are in a gaseous phase.

24. The method of claim 1 , wherein the associating occurs while the magnetic materials or precursors of magnetic materials are in a liquid phase.

25. The method of claim 1 , further comprising a step of hydrolyzing the magnetic materials or the magnetic material precursors.

26. The method of claim 1 , wherein the carbon nanoribbons comprise graphene nanoribbons.

27. The method of claim 26 , wherein the graphene nanoribbons are selected from the group consisting of doped graphene nanoribbons, graphene oxide nanoribbons, functionalized graphene oxide nanoribbons, doped graphene oxide nanoribbons, reduced graphene oxide nanoribbons, and combinations thereof.

28. A carbon nanoribbon composition comprising:
functionalized carbon nanoribbons,
wherein the functionalized carbon nanoribbons comprise carbon nanoribbons functionalized with vinyl polymers; and

magnetic materials associated with the carbon nanoribbons.

29. The carbon nanoribbon composition of claim 28 , wherein the carbon nanoribbons are functionalized with one or more functionalizing agents, wherein the functionalizing agents are selected from the group consisting of alkyl groups, haloalkanes, iodoalkanes, hexadecyl groups, octyl groups, butyl groups, oxides, epoxides, alcohols, halides, aldehydes, ketones, esters, enones, nitriles, silyl chlorides, monomers, vinyl monomers, CO 2 , CS 2 , and combinations thereof.

30. The carbon nanoribbon composition of claim 28 , wherein the functionalized carbon nanoribbons are selected from the group consisting of doped graphene nanoribbons, graphene oxide nanoribbons, functionalized graphene oxide nanoribbons, doped graphene oxide nanoribbons, reduced graphene oxide nanoribbons, and combinations thereof.

31. The carbon nanoribbon composition of claim 28 , wherein the functionalized carbon nanoribbons further comprise edge-functionalized carbon nanoribbons.

32. The carbon nanoribbon composition of claim 28 , wherein the functionalized carbon nanoribbons further comprise polymer-functionalized carbon nanoribbons.

33. The carbon nanoribbon composition of claim 32 , wherein the polymer-functionalized carbon nanoribbons are edge-functionalized.

34. The carbon nanoribbon composition of claim 28 , wherein the vinyl polymers are selected from the group consisting of polyethylene, polystyrene, polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyacrylonitrile, and combinations thereof.

35. The carbon nanoribbon composition of claim 32 , wherein the polymer-functionalized carbon nanoribbons are functionalized with polyethylene oxide.

36. The carbon nanoribbon composition of claim 28 , wherein the magnetic materials are selected from the group consisting of metal salts, alkali metals, metal carboxylates, metals, metallic alloys, metal oxides, and combinations thereof.

37. The carbon nanoribbon composition of claim 28 , wherein the magnetic materials are selected from the group consisting of lithium, sodium, potassium, cesium, rubidium, calcium, cobalt, nickel, copper, iron, manganese, gadolinium, yttrium, chromium, dysprosium, europium, alloys thereof, and combinations thereof.

38. The carbon nanoribbon composition of claim 28 , wherein the carbon nanoribbons have a conductivity ranging from about 1 S/cm to about 1,000,000 S/cm.

39. The carbon nanoribbon composition of claim 28 , wherein the carbon nanoribbons have a condu

Assignees

• Tour James M
• Genorio Bostjan
• Lu Wei
• Price-Hoelscher Brandi Katherine
• Univ Rice William M
• M-I L L C

Inventors

• Tour James M
• Genorio Bostjan
• Lu Wei
• Price-Hoelscher Brandi Katherine

Classifications

• B82Y30/00 Primary

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

• C09K8/032 Primary

  Inorganic additives · CPC title

• E21B49/087

  Well testing, e.g. testing for reservoir productivity or formation parameters · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C09K8/32

  Non-aqueous well-drilling compositions, e.g. oil-based · CPC title