Carbon Nanotubes

Since their discovery in 1991 by Ijima1, single wall carbon nanotubes have stimulated a great deal of activity in both the global research community and industry, and have inspired much investment in manufacturing methods, characterization and application development. The reasons for this are quite clear, given the remarkable properties these materials possess and the diversity of distinct species, each with its own unique variations in those properties.

Single-Walled Carbon Nano Tubes (SWCNTs) and Multi-Walled Carbon Nano Tubes (MWCNTs) share some similarities, but also striking differences. Of the two carbon nanotube types, SWCNTs are the more remarkable. They have outstanding strength, can be highly electrically conducting or semiconducting, may be as thermally conductive at room temperature as any other known material, have a very large surface area per unit mass, and have unique optical properties. This range of unique properties has opened the doors to advances in performance in a wide range of materials and devices. Technical details about SWCNTs and their various properties are featured in a technical spotlight as well as Material Matters Vol. 4 No. 1.

References
1) Iijima, S. Nature, 1991, 354, 56.

Single-Walled Carbon Nanotubes

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Assay

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755710 Carbon nanotube, single-walled >70% (TGA) >70% (TGA)
Catalytic Carbon Vapor Deposition (CCVD) Method
704121 Carbon nanotube, single-walled (7,6) chirality, ≥90% carbon basis (≥99% as carbon nanotubes), 0.83 nm average diameter Green Alternative ≥90% carbon basis (≥99% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
773735 Carbon nanotube, single-walled (6,5) chirality, ≥95% carbon basis (≥99% as carbon nanotubes), 0.78 nm average diameter ≥95% carbon basis (≥99% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
704113 Carbon nanotube, single-walled ≥89% carbon basis (≥99% as carbon nanotubes), 0.7-1.3 nm diameter Green Alternative ≥89% carbon basis (≥99% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
724777 Carbon nanotube, single-walled ≥90% carbon basis (≥80% as carbon nanotubes), 1.3 nm diameter Green Alternative ≥90% carbon basis (≥80% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
704148 Carbon nanotube, single-walled (6,5) chirality, ≥90% carbon basis (≥99% as carbon nanotubes), 0.78 nm average diameter Green Alternative ≥90% carbon basis (≥99% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
775533 Carbon nanotube, single-walled ≥95% carbon basis (≥99% as carbon nanotubes), 0.84 nm average diameter ≥95% carbon basis (≥99% as carbon nanotubes)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
698695 Carbon nanotube, single-walled 40-60 wt. % carbon basis, D × L 2-10 nm × 1-5 μm , bundle dimensions Green Alternative 40-60 wt. % carbon basis
Electric Arc Discharge Method
750522 Carbon nanotube, single-walled 98% (Semiconducting) 2% (Metallic)
98% (Semiconducting)
Electric Arc Discharge Method
750514 Carbon nanotube, single-walled <1% Metal Catalyst 30% (Metallic)
70% (Semiconducting)
Electric Arc Discharge Method
750492 Carbon nanotube, single-walled <3.5% Metal Catalyst 30% (Metallic)
70% (Semiconducting)
Electric Arc Discharge Method
750530 Carbon nanotube, single-walled 98% (Metallic) 2% (Semiconducting)
98% (Metallic)
Electric Arc Discharge Method
685380 Carbon nanotube, single-walled, amide functionalized >90% carbon basis, D × L 4-6 nm × 0.7-1.0 μm , bundle dimensions >90% carbon basis
Electric Arc Discharge Method
652490 Carbon nanotube, single-walled, carboxylic acid functionalized >90% carbon basis, D × L 4-5 nm × 0.5-1.5 μm , bundle dimensions >90% carbon basis
Electric Arc Discharge Method
652482 Carbon nanotube, single-walled, octadecylamine functionalized 80-90% carbon basis, D × L 2-10 nm × 0.5-2 μm , bundle dimensions 80-90% carbon basis
Electric Arc Discharge Method
652474 Carbon nanotube, single-walled, poly(ethylene glycol) functionalized >80% carbon basis, D × L 4-5 nm × 0.5-0.6 μm , bundle dimensions >80% carbon basis
Electric Arc Discharge Method
639230 Carbon nanotube, single-walled, polyaminobenzene sulfonic acid functionalized 75-85% carbon basis, D × L 1.1 nm × 0.5-1.0 μm , bundle dimensions 75-85% carbon basis
Electric Arc Discharge Method
900711 Carbon nanotube, single-walled ≥98% carbon basis New ≥98% carbon basis
<1% (ash)
Super-growth (SG) method.
805033 Carbon nanotube, single-walled carbon ≥85 %, >70% (carbon as SWNT), diam. 1.3-2.3 nm >70% (carbon as SWNT)
 
791490 Carbon nanotube, single-walled, conductive aqueous ink, SWCNT 0.2 mg/mL    
791504 Carbon nanotube, single-walled, conductive aqueous ink, SWCNT 1.00 mg/mL    
792462 Carbon nanotube, single-walled, solvent-based conductive ink, SWCNT 1 mg/mL    

Double-Walled Carbon Nanotubes

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755168 Carbon nanotube, double-walled <10% Metal Oxide(TGA)   Catalytic Carbon Vapor Deposition (CCVD) Method
755141 Carbon nanotube, double-walled short, ≤10% Metal Oxide(TGA)   Catalytic Carbon Vapor Deposition (CCVD) Method
637351 Carbon nanotube, double-walled 50-80% carbon basis, O.D. × I.D. × L 5 nm × 1.3-2.0 nm × 50 μm Green Alternative 50-80% carbon basis
Chemical Vapor Deposition (CVD) Method
773840 Carbon nanotube, multi-walled ≥98% carbon basis, O.D. × I.D. × L 10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM Green Alternative ≥98% carbon basis
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
900788 Carbon nanotube, few-walled carbon ≥95 %, D × L 2.5-3 nm × 2-6 μm New ≥94% (carbon as CNT by TGA)
CoMoCAT synthesis process

Multi-Walled Carbon Nanotubes

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755117 Carbon nanotube, multi-walled thin and short, <5% Metal Oxide(TGA)   Catalytic Carbon Vapor Deposition (CCVD) Method
755133 Carbon nanotube, multi-walled thin, <5% Metal Oxide(TGA)   Catalytic Carbon Vapor Deposition (CCVD) Method
755125 Carbon nanotube, multi-walled, carboxylic acid functionalized thin, extent of labeling: >8% carboxylic acid functionalized, avg. diam. × L 9.5 nm × 1.5 μm >80% carbon basis
Catalytic Carbon Vapor Deposition (CCVD) Method
659258 Carbon nanotube, multi-walled >90% carbon basis, D × L 110-170 nm × 5-9 μm Green Alternative >90% carbon basis
Chemical Vapor Deposition (CVD) Method
698849 Carbon nanotube, multi-walled >98% carbon basis, O.D. × L 6-13 nm × 2.5-20 μm Green Alternative >98% carbon basis
Chemical Vapor Deposition (CVD) Method
724769 Carbon nanotube, multi-walled O.D. × L 6-9 nm × 5 μm, >95% (carbon) Green Alternative >95% (carbon)
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
773840 Carbon nanotube, multi-walled ≥98% carbon basis, O.D. × I.D. × L 10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM Green Alternative ≥98% carbon basis
CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method
900788 Carbon nanotube, few-walled carbon ≥95 %, D × L 2.5-3 nm × 2-6 μm New ≥94% (carbon as CNT by TGA)
CoMoCAT synthesis process
412988 Carbon nanotube, multi-walled as-produced cathode deposit, >7.5% MWCNT basis, O.D. × L 7-15 nm × 0.5-10 μm Green Alternative >7.5% MWCNT basis
Electric Arc Discharge Method
406074 Carbon nanotube, multi-walled powdered cylinder cores, 20-30% MWCNT basis, O.D. × L 7-12 nm × 0.5-10 μm Green Alternative 20-30% MWCNT basis
Electric Arc Discharge Method
687804 Carbon nanotube array, multi-walled vertically aligned on silicon wafer substrate >95 atom % carbon basis (x-ray)
Plasma-Enhanced Chemical Vapor Deposition (PECVD) Method
687812 Carbon nanotube array, multi-walled vertically aligned on copper wafer substrate >99.9% carbon basis
Plasma-Enhanced Chemical Vapor Deposition (PECVD) Method

Carbon Nanofibers

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698830 Graphite platelet nanofibers, D × L 50-250 nm × 0.5-5 μm, 98% carbon basis Green Alternative 98% carbon basis
Produced by Catalytic Chemical Vapor Deposition (CCVD).
719781 Carbon nanofibers graphitized (iron-free), composed of conical platelets, D × L 100 nm × 20-200 μm   Produced by Floating Catalyst Vapor-Grown Method.
719803 Carbon nanofibers graphitized, platelets (conical), >98% carbon basis, D × L 100 nm × 20-200 μm >98% carbon basis
Produced by Floating Catalyst Vapor-Grown Method
719811 Carbon nanofibers pyrolitically stripped, platelets (conical), >98% carbon basis, D × L 100 nm × 20-200 μm >98% carbon basis
Produced by Floating Catalyst Vapor-Grown Method
799017 Carbon nanochips