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Type: Artigo de periódico
Title: Síntese de nanotubos de carbono de parede simples por sublimação de grafite em atmosfera de hélio
Title Alternative: Synthesis of single-wall nanotubes by pyrolysis of graphite in helium atmosphere
Author: Romero, José Gino Venegas
Luengo, Carlos Alberto
Huber, John G
Rosolen, José Maurício
Abstract: Macroscopic samples of fullerene nanostructures are obtained in a modified arc furnace using the electric arc method with a Helium atmosphere at low pressures. High purity graphite rods are used as electrodes but, when drilled and the orifices filled with powders of transition metals (Fe, Co, Ni) acting as catalysts, the resulting particles are carbon nanostructures of the fullerene family, known as Single Wall Nanotubes (SWNTs). They have typical diameters of 1.4 nm, lengths up to tenths of microns and they are arranged together in bundles containing several SWNTs. Those samples are observed and analyzed using Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) techniques.
Subject: nanotubes
Editor: Sociedade Brasileira de Química
Rights: aberto
Identifier DOI: 10.1590/S0100-40422002000100011
Date Issue: 1-Feb-2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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