Reduction of WO3 to nano-WC by thermo-chemical reaction route

Akshay Kumar, K. Singh, O. P. Pandey

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Thermo-chemical reaction route has been used to synthesize WC-nanoparticles from WO3. Two different carbon sources are used to study the effect of these sources on synthesis. The as-prepared samples are characterized by using X-ray diffraction (XRD), differential thermal analyzer (DTA), thermo-gravimetric analysis (TGA) and transmission electron microscope (TEM). The results indicate that reduction of WO3 to WC takes place by the adsorption of carbon at the surface of WO3 forming porous structure at the defect sites through which carbon diffuses. As the concentration of adsorbed carbon increases the growth of carbon nanotube starts from this site which ultimately gets converted to carbon nano-fibers of higher chemical activity.

Original languageEnglish
Pages (from-to)677-684
Number of pages8
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume41
Issue number4
DOIs
StatePublished - Feb 2009
Externally publishedYes

Keywords

  • Autoclave
  • Mesoporous
  • Nanoparticles
  • WC

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