Details

Autor(en) / Beteiligte

• Alvizo-Paez, Edgar Rogelio
• Romo-Herrera, Jose Manuel
• Terrones, Humberto
• Terrones, Mauricio
• Ruiz-Garcia, Jaime
• Hernandez-Lopez, Jose Luis

Titel

Soft purification of N-doped and undoped multi-wall carbon nanotubes

Ist Teil von

• Nanotechnology, 2008-04, Vol.19 (15), p.155701-155701 (9)

Ort / Verlag

England: IOP Publishing

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A soft method for purifying multi-wall carbon nanotubes (N-doped and undoped) is presented. The technique includes a hydrothermal/ultrasonic treatment of the material in conjunction with other subsequent treatments, including the extraction of polyaromatic compounds, dissolution of metal particles, bundle exfoliation, and uniform dispersion. This method avoids harsh oxidation protocols that burn (via thermal treatments) or functionalize (by introducing chemical groups) the nanotubes. We show a careful analysis of each purification step and demonstrate that the technique is extremely efficient when characterizing the materials using scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDAX), scanning tuneling electron microscopy (STEM), x-ray powder diffraction (XRD), diffuse reflectance Fourier transform infrared (DRFTIR) spectroscopy and thermogravimetric analysis (TGA).