COOH Functionalized Carbon Nanotubes (Research Grade, high purity) We start with our purified PD15L5-20 multiwall carbon nanotubes (purity >95% by TGA) and perform a reflux in sulfuric/nitric acid to functionalize the surfaces of these nanotubes. This process results in a large concentration of carboxyl (-COOH) groups on the nanotube surface, and may also generate other groups (e.g. –OH) as well. After functionalization, these carboxylated nanotubes have 2-7 wt% COOH by titration. Images below are FTIR spectrum and Raman Spectrum Data of our COOH functionalized nanotubes. Click on the images to view in PDF.       Related product: Amide functionalized carbon nanotubes Click on a cell below to order online or for more information Shipping charges are prepaid and added to an invoice. Applicable duties and taxes are paid separately upon customs clearance. Nanotube Length COOH Functionalized Carbon Nanotubes (Multiwall) Hollow Structure Bamboo Structure Outer Diameter 15 ± 5nm Outer Diameter 30 ± 15nm Outer Diameter 30 ± 10nm Catalog No. Price Catalog No. Price Catalog No. Price 1-5microns PD15L1-5-COOH,    1g $160 PD30L1-5-COOH,    1g $160 BPD30L1-5-COOH,    1g $160 PD15L1-5-COOH,    5g $750 PD30L1-5-COOH,    5g $750 BPD30L1-5-COOH,    5g $750 5-20microns PD15L5-20-COOH,   1g $130 PD30L5-20-COOH,  1g $130 BPD30L5-20-COOH,  1g $130 PD15L5-20-COOH,   5g $600 PD30L5-20-COOH,  5g $600 BPD30L5-20-COOH,  5g $600 The page was updated on 01/21/2008