Purification of fluids with nanomaterials
Disclosed herein is a nanostructured material comprising defective carbon nanotubes chosen from impregnated, functionalized, doped, charged, coated, and irradiated nanotubes, and combinations thereof. The defective carbon nanotubes contain a defect which is a lattice distortion in at least one carbon ring. Also disclosed is a method of purifying fluids, such as liquids, including water, as well as gases, including the air using, this nanostructured material.
1. A material for reducing contaminants in a fluid, said material comprising:
carbon nanotubes, and
a porous support medium for said carbon nanotubes, said porous support medium being permeable to the flow of said fluid,
wherein a plurality of said carbon nanotubes comprise:
a lattice distortion,
at least one functional group, and
are fused or bonded to said porous support medium, to another carbon nanotube, or to a combination thereof.
2. The material of claim 1 , wherein said porous support medium comprises at least one component chosen from fibers, substrates, and particles.
3. The material of claim 2 , wherein said fibers, substrates, and particles are chosen from ceramic and polymeric material.
4. The material of claim 3 , wherein said polymeric material comprises single or multi-component polymers, nylon, polyurethane, acrylic, methacrylic, polycarbonate, epoxy, silicone rubbers, polystyrene, polyethylene terephthalate, polybutylene terephthalate, poly-paraphylene terephtalamide, poly-(p-phenylene terephtalamide), polyester ester ketone, viton fluoroelastomer, poly-tetrafluoroethylene, polyvinylchloride, polyester, polypropylene, polychloroprene, acetates, and combinations thereof.
5. The material of claim 4 , wherein said multi-component polymers exhibit at least two different glass transition or melting temperatures.
6. The material of claim 3 , wherein said ceramic material is chosen from at least one of the following: boron carbide, boron nitride, boron oxide, boron phosphate, spinel, garnet, lanthanum fluoride, calcium fluoride, silicon carbide, carbon and its allotropes, silicon oxide, glass, quartz, aluminum oxide, aluminum nitride, zirconium oxide, zirconium carbide, zirconium boride, zirconium nitrite, hafnium boride, thorium oxide, yttrium oxide, magnesium oxide, phosphorus oxide, cordierite, mullite, silicon nitride, ferrite, sapphire, steatite, titanium carbide, titanium nitride, titanium boride, and combinations thereof.
7. The material of claim 2 , wherein said particles have a diameter up to 100 microns.
8. The material of claim 1 , wherein said carbon nanotubes are present in said material in an amount sufficient to reduce the concentration of contaminants in fluid that comes into contact with said material.
9. The material of claim 1 , wherein said carbon nanotubes are further doped or impregnated with a non-carbon nanotube material.
10. The material of claim 1 , wherein said functional group comprises at least one organic functional group, inorganic functional group, or combinations thereof.
11. The material of claim 10 , wherein said functional group is attached to the surface of said carbon nanotubes.
12. The material of claim 11 , wherein said functional group is located on the ends of said carbon nanotubes and are polymerized.
13. The material of claim 10 , wherein said at least one organic functional group comprises linear or branched, saturated or unsaturated groups.
14. The material of claim 10 , wherein said at least one organic functional group comprises at least one chemical group chosen from carboxyls, amines, polyamides, polyamphiphiles, diazonium salts, pyrenyls, silanes, and combinations thereof.
15. The material of claim 10 , wherein said at least one inorganic functional group comprises at least one fluorine compound of boron, titanium, niobium, tungsten, and combination thereof.
16. The material of claim 10 , wherein said at least one organic and inorganic functional groups comprise a halogen atom or halogenated compound.
17. The material of claim 10 , wherein said carbon nanotubes comprise a non-uniformity in composition and/or density of functional groups across the surface of said carbon nanotubes and/or across at least one dimension of said material.
18. The material of claim 10 , wherein said carbon nanotubes comprise a substantially uniform gradient of functional groups across the surface of said carbon nanotubes and/or across at least one dimension of said material.
19. The material of claim 1 , wherein said carbon nanotubes have a scrolled tubular or non-tubular nano-structure of carbon rings.
20. The material of claim 19 , wherein said carbon nanotubes having a scrolled tubular or non-tubular nano-structure of carbon rings are single-walled, multi-walled, nanoscrolled or combinations thereof.
21. The material of claim 19 , wherein said carbon nanotubes having a scrolled tubular or non-tubular nano-structure have a morphology chosen from nanohorns, cylindrical, nanospirals, dendrites, trees, spider nanotube structures, nanotube Y-junctions, and bamboo morphology.
22. The material of claim 1 , wherein said fluid comprises at least one liquid or gas.
23. The material of claim 22 , wherein said liquid comprises water.
24. The material of claim 22 , wherein said of liquid is chosen from petroleum and its byproducts, biological fluids, foodstuffs, alcoholic beverages, and medicines.
25. The material of claim 24 , wherein said petroleum and its byproducts comprise aviation, automotive, marine, and locomotive fuels, rocket fuels, industrial and machine oils and lubricants, and heating oils and gases.
26. The material of claim 24 , wherein said petroleum and its by-products comprise aviation fuel and said contaminants comprise bacteria.
27. The material of claim 24 , wherein said biological fluids are derived from animals, humans, plants, or comprise a growing broth used in the processing of a biotechnology or pharmaceutical product.
28. The material of claim 24 , wherein said biological fluids comprise blood, milk and components of both.
29. The material of claim 24 , wherein said foodstuffs are chosen from animal by-products, fruit juice, natural syrups, and natural and synthetic oils used in the cooking or food industry.
30. The material of claim 24 , wherein said animal by-products include milk and eggs.
31. The material of claim 24 , wherein natural and synthetic oils used in the cooking or food industry comprise olive oil, peanut oil, flower oils, and vegetable oils.
32. The material of claim 24 , wherein said alcoholic beverages comprise beer, wine, or liquors.
33. The material of claim 22 , wherein said gas comprises the air.
34. The material of claim 1 , wherein said contaminants are chosen from at least one of the following: salts, metals, pathogens, microbiological organisms, DNA, RNA, natural organic molecules, molds, fungi, and natural and synthetic toxins, endotoxins, proteins, and enzymes.
35. The material of claim 34 , wherein said natural and synthetic toxins comprise chemical and biological warfare agents.