Implementation of an electric field (AC and DC) for the growth of carbon filaments via reaction under autogenic pressure at elevated temperatures of mesitylene without catalyst or solvent

Vilas G. Pol, Swati V. Pol, Boris Markovsky, Jose M. Calderon-Moreno, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The electric-field-directed growth of carbon filaments by reactions under autogenic pressure at elevated temperatures (RAPET) of mesitylene without a catalyst, a support, or a solvent is demonstrated. The thermal dissociation of mesitylene at 700°C in a closed Swagelok cell under air atmosphere in a zero-applied electric field exhibits no preferred orientation and forms 2.5 ± 0.05 μm spherical carbon bodies. In contrast, a one-dimensional growth of carbon filaments is produced with the application of constant direct currents [DC] in the range of 1.5-5 A. The application of an AC [1.5-5 A] current yielded, in addition to the straight filaments, peculiar carbon filaments with sharp edges, zigzag-, dipod-, and tripodlike carbon microstructures, and other morphologies. A plausible mechanism is proposed for the growth of carbon filaments under the implementation of AC or DC electric fields.

Original languageEnglish
Pages (from-to)1512-1519
Number of pages8
JournalChemistry of Materials
Volume18
Issue number6
DOIs
StatePublished - 21 Mar 2006

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