Thermal, Raman and surface area studies of microcoiled carbon fiber synthesized by CVD microwave system

Jining Xie, Pramod K. Sharma, V. V. Varadan, V. K. Varadan, Bhabendra K. Pradhan, Semih Eser

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Abstract

An attempt was made to synthesize coiled carbon fibers over nickel catalyst using acetylene as a carbon source at 700 °C by microwave technique. X-ray diffraction (XRD) and temperature-programmed oxidation (TPO) studies showed presence of disordered carbon in these materials. Highly coiled carbon fibers were observed by scanning electron microscopy (SEM). From a transmission electron microscopy (TEM) study, the average diameter of the fiber was measured ≈200 nm. A Raman spectra of microcoiled carbon fiber was also recorded at room temperature under a nitrogen atmosphere. It has been observed that the surface area of the microwave derived microcoiled carbon was 62 m2g-1. This value of surface area of microcoiled carbon was found to decrease with increasing temperature.

Original languageEnglish (US)
Pages (from-to)217-223
Number of pages7
JournalMaterials Chemistry and Physics
Volume76
Issue number3
DOIs
StatePublished - Sep 1 2002

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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