Nano-material and method of fabrication
View Patent ↗A fluffy nano-material and method of manufacture are described. At 2000× magnification the fluffy nanomaterial has the appearance of raw, uncarded wool, with individual fiber lengths ranging from approximately four microns to twenty microns. Powder-based nanocatalysts are dispersed in the fluffy nanomaterial. The production of fluffy nanomaterial typically involves flowing about 125 cc/min of organic vapor at a pressure of about 400 torr over powder-based nano-catalysts for a period of time that may range from approximately thirty minutes to twenty-four hours.
1. A method of manufacturing a fluffy nanomaterial, comprising:
contacting a granulated metal support material with a solution including metal ions from a metal salt to form nanocatalysts;
heating the nanocatalysts to a temperature ranging from about 400° C. to about 1500° C.; and
exposing the nanocatalysts to a flow of organic vapor to form fluffy nanomaterial having individual carbon nanotubes anchored directly to the support material.
2. The method of claim 1 wherein the nanocatalysts are heated to a temperature ranging from about 600° C. to about 1200° C.
3. The method of claim 2 wherein the nanocatalysts are heated to a temperature ranging from about 600° C. to about 800° C.
4. The method of claim 1 wherein the granulated metal support material includes NiAl particles.
5. A method of manufacturing a fluffy nanomaterial, comprising:
contacting metal support particles having a plurality of nano-scale features formed on the surface of each of the metal particles with a solution including metal ions from a metal salt to form nanocatalysts;
heating the nanocatalysts to a temperature ranging from about 400° C. to about 1500° C.; and
exposing the nanocatalysts to a flow of organic vapor to form fluffy nanomaterial having individual carbon nanotubes anchored directly to the metal support particles.
6. The method of claim 5 wherein the solution includes the metal ions from the metal salt and an acid including an anion of the metal salt.
7. The method of claim 5 wherein the metal salt includes FeCl 3 .
8. The method of claim 5 wherein the nanocatalysts are heated to a temperature ranging from about 600° C. to about 1200° C.
9. The method of claim 5 wherein the nanocatalysts are heated to a temperature ranging from about 600° C. to about 800° C.
10. The method of claim 5 wherein the metal support particles include NiAl particles.
11. A method of manufacturing a fluffy nanomaterial, comprising:
ball milling metal support particles until a plurality of nano-scale features are formed adjacent the surface of each of the metal support particles;
contacting the metal support particles with a solution including metal ions from a metal salt to form metal nanocatalysts;
heating the metal nanocatalysts to a temperature ranging from about 400° C. to about 1500° C.; and
exposing the metal nanocatalysts to a flow of organic vapor for a time period greater than thirty minutes to form fluffy nanomaterial having individual carbon nanotubes with a length of at least 100 microns.
12. The method of claim 11 wherein the metal salt includes FeCl 3 .
13. The method of claim 11 wherein the solution includes the metal ions from the metal salt and an acid including an anion of the metal salt.
14. The method of claim 11 wherein the metal nanocatalysts are heated to a temperature ranging from about 600° C. to about 1200° C.
15. The method of claim 11 wherein the metal nanocatalysts are heated to a temperature ranging from about 600° C. to about 800° C.
16. The method of claim 11 wherein the metal support particles include NiAl particles.
17. The method of claim 1 wherein the granulated metal support material comprises support particles having a diameter less than 100 micrometers.
18. The method of claim 1 wherein the granulated metal support material comprises support particles having a diameter of 100 micrometers or greater.
19. The method of claim 5 wherein the metal support particles have a diameter less than 100 micrometers.
20. The method of claim 5 wherein the metal support particles have a diameter of 100 micrometers or greater.
21. The method of claim 11 wherein the metal support particles have a diameter less than 100 micrometers.
22. The method of claim 11 wherein the metal support particles have a diameter of 100 micrometers or greater.
23. The method of claim 1 wherein the granulated metal support material is selected from a group consisting of Sc, Ni, Fe, Cr, Co, Ti, V, Mn, Cu, and Zn containing metals, alloys, and intermetallics.
24. The method of claim 1 wherein the granulated metal support material is selected from a group consisting of Sc, Ni, Fe, Cr, Co, Ti, V, Mn, Cu, Zn, Y, Zr, Nb, Ru, Rh, Pd, Hf, Ta, W, Re, Ir, Pt, Au, Ce, Th, and U containing metals, alloys, and intermetallics.
25. The method of claim 1 wherein the flow of organic vapor is between about 125 cc/min and about 150 cc/min and at a process pressure of between about 200 ton and about 400 torr.
26. The method of claim 5 wherein the flow of organic vapor is between about 125 cc/min and about 150 cc/min and at a process pressure of between about 200 ton and about 400 torr.
27. The method of claim 11 wherein the flow of organic vapor is between about 125 cc/min and about 150 cc/min and at a process pressure of between about 200 ton and about 400 torr.