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Related products:
  • Amine Functionalized Carbon Nanotubes
  • Multiwall Carbon Nanotubes
  • Double Wall Carbon Nanotubes
  • Single Wall Carbon Nanotubes
  • COOH Functionalized Carbon Nanotubes
    To carboxyl functionalize our carbon nanotubes (produced by the CVD method), we perform a reflux in concentrated sulfuric / nitric acid. This process results in a large concentration of carboxylic acid COOH groups on the nanotube surface, and also generates other groups. After functionalization, these carboxylated multiwall carbon nanotubes have 2-7 wt% COOH by titration. These typically have a high zeta potential, varying from -30 to -70mV as a function of pH.
    We highly recommend our PASTE versions of the COOH terminated nanotubes. Pastes are supplied at 10wt% concentration in water, and are very easy to disperse in other solvents. In contrast, the dried carboxylate powders are less easy to redisperse.

    Images below are FTIR, Raman and Zeta Potential Data of our COOH functionalized multiwall nanotubes (PD15L5-20-COOH). Click on the images to view in PDF. More analytical data can be requested via email.
    FTIR Spectrum of COOH Functionalized MWCNT   Raman Spectrum of COOH Functionalized MWCNT   Zeta potential of COOH Functionalized nanotubes   XPS_C   XPS_C
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    MSDS for Multiwall & Doublewall Nanotubes     MSDS for SWNT
    Catalog No. Description Size, Price Catalog No. Description Size, Price
    COOH Functionalized Hollow Multiwall Carbon Nanotubes, purity >95% by TGA
    PD15L1-5-COOH OD: 15 ± 5 nm,
    Length:1-5 μm
    1g, $160 PD15L5-20-COOH OD:15 ± 5 nm
    Length:5-20 μm
    1g, $130
    5g, $750 5g, $600
    PD30L1-5-COOH OD:30 ± 15 nm,
    Length:1-5 μm
    1g, $160 PD30L5-20-COOH OD:30 ± 15 nm
    Length:5-20 μm
    1g, $130
    5g, $750 5g, $600
    COOH Functionalized Bamboo Structure Multiwall Carbon Nanotubes, purity >95% by TGA
    BPD30L1-5-COOH OD: 30 ± 10 nm
    Length: 1-5 μm
    1g, $170 BPD30L5-20-COOH OD: 30 ± 10 nm
    Length: 5-20 μm
    1g, $140
    5g, $800 5g, $650
    COOH Functionalized Double Wall Carbon Nanotubes DWNT, purity >95% by TGA
    D4L1-5-COOH OD: 4 ± 1 nm
    Length: 1-5 μm
    1g, $370 D4L5-20-COOH OD: 4 ± 1 nm
    Length: 5-20 μm
    1g, $340
    5g, $1800 5g, $1650
    COOH Functionalized Single Wall Carbon Nanotubes SWNT, purity >95% by TGA
    D1.5L1-5-COOH OD: ~1.5 nm
    Length: 1-5 μm
    1g, $220      
    5g, $1000      
    The page was updated on 05/30/2013 nanolab.inc.