Microporous carbon nanofibers

Patent metadata

Field	Value
Publication number	US-11508968-B2
Application number	US-201916278041-A
Country	US
Kind code	B2
Filing date	Feb 15, 2019
Priority date	Feb 16, 2018
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

A composition can include a carbon nanofiber, wherein a precursor for the carbon nanofiber includes an alcohol and an aldehyde crosslinked by a primary amine. In certain embodiments, the carbon nanofiber can be biotemplated. Biotemplating enables precise control of morphology at the nanometer scale, while molecular templating allows control of carbon nanotexture and structure at the sub-nanometer scale.

First claim

What is claimed is:

1. A composition comprising:
an ultrafine microporous biotemplated filamentous carbon nanofiber with micropores smaller than 20 nm and up to 2000 m2/g surface area without activation having an aspect ratio of about 135, wherein a precursor for the ultrafine microporous biotemplated filamentous carbon nanofiber includes an alcohol and an aldehyde crosslinked by a primary amine.

2. The composition of claim 1 , wherein the precursor for the carbon nanofiber is associated with a template.

3. The composition of claim 2 , wherein the template is a bacteriophage.

4. The composition of claim 3 , wherein the bacteriophage is M13.

5. The composition of claim 4 , wherein the M13 is modified by inserting an EEAE peptide moiety.

6. The composition of claim 2 , wherein the template is a carbon nanotube.

7. The composition of claim 2 , wherein the template is an iron oxide nanoparticle.

8. The composition of claim 1 , wherein the alcohol is resorcinol.

9. The composition of claim 1 , wherein the aldehyde is formaldehyde.

10. The composition of claim 1 , wherein the primary amine is a bifunctional primary amine.

11. The composition of claim 10 , wherein the bifunctional primary amine is ethylenediamine.

12. The composition of claim 1 , wherein the primary amine includes a silicon moiety.

13. The composition of claim 12 , wherein the primary amine is 3-aminopropyltrimethoxysilane (APTMS).

14. The composition of claim 1 , wherein the composition includes pores.

15. The composition of claim 14 , wherein the pores include micropores smaller than 2 nm in size.

16. The composition of claim 14 , wherein the pores include macropores bigger than 100 nm in size.

17. The composition of claim 1 , wherein a surface area of the composition is in a range of 200 m2/g and 2000 m2/g.

18. A method of making the composition of claim 1 including a carbon nanofiber comprising:
forming a precursor by crosslinking an alcohol and an aldehyde using a primary amine; and
carbonizing the precursor.

19. The method of claim 18 , further comprising incorporating the precursor in a template.

20. The method of claim 19 , wherein the template is a bacteriophage.

21. The method of claim 18 , wherein the precursor includes a single phase of crosslinked polysiloxane, aliphatic and phenolic moieties.

22. The method of claim 18 , wherein the forming the precursor is carried out in a pH range of 8.3-8.8.

23. The method of claim 22 , wherein the forming the precursor is carried out with mechanical agitation.

24. The method of claim 18 , further comprising tuning nanotexture of the carbon nanofiber by tuning a content of a silicon moiety.

25. A method of removing a contaminant comprising:
administering into a contaminated site the composition of claim 1 ; and
removing the composition after adsorption to a contaminant.

Assignees

• Massachusetts Inst Technology

Inventors

• Belcher Angela
• Qi Jifa
• Zhang Geran

Classifications

• H01M50/417

  Polyolefins · CPC title

• H01M50/44

  Fibrous material · CPC title

• H01M4/38

  of elements or alloys · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• H01M2004/028

  Positive electrodes · CPC title