Synthesis of carbon nanotubes by defluorination of PTFE with silicon

Year: 2012

Authors: Cartonuto G., De Nicola S., Camerlingo C., Peluso A., Nicolais L.

Autors Affiliation: Istituto per i Materiali Compositi e Biomedici—CNR, 1-80055 Portici (NA), Italy;
Istituto Nazionale di Ottica—CNR, Via Campi Flegrei, 34-80078 Pozzuoli (NA), Italy
INFN Sezione di Napoli, Naples, Italy;
Istituto di Cibernetica—CNR, Via Campi Flegrei, 34-80078 Pozzuoli (NA), Italy;
Dipartimento di Ingegneria dei Materiali e della Produzione, Universit`a degli Studi di Napoli “Federico II,” 80-80125 Naples, Italy

Abstract: Nowadays, there is a strong interest in carbon nanotubes (CNTs) since these nanostructured materials have large potential applications in different technological fields. In this work, a very simple approach for synthesizing CNTs in mild conditions has been developed and investigated. In particular, the nanotubes have been obtained by thermal defluorination of poly(tetrafluoroethylene) (PTFE) by Si, which also acts as an inorganic catalyst for the CNT growth. Fine powders of PTFE and Si were homogeneously mixed together and then compacted by cold pressing. The obtained composite pills were placed into a quartz tube furnace at 650 degrees C, and a vacuum was applied to remove the gaseous by-product (SiF4). The obtained pyrolysis product consisted of CNTs, wrapping the surface of silicon grains. CNTs have been characterized by scanning electron microscopy, Raman spectroscopy, and large angle x-ray powder diffraction. (c) 2012 Wiley Periodicals, Inc. Adv Polym Techn 31: 246251, 2012; View this article online at DOI 10.1002/adv.21267


Volume: 31 (3)      Pages from: 246  to: 251

KeyWords: Carbon nanotubes; Defluorination; Nanomaterials; Raman spectroscopy; Poly(tetrafluoroethylene
DOI: 10.1002/adv.21267

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