Metal-free synthesis of carbon nanotubes filled with calcium silicate

Jiangtao Zhu, Juncai Jia, Fung Luen Kwong, Dickon H L Ng, Peter Crozier

Research output: Contribution to journalLetterpeer-review

10 Scopus citations


A new metal-free catalyst CaSiO3 was developed to grow carbon nanotubes (CNTs) on a pyrolytic graphite paper tape by an ethanol catalytic chemical vapor deposition method at 1200-1400 °C. The prepared CNTs with a droplet tip had a multi-walled structure and were filled with amorphous CaSiO3. Temperature, determining the melting of CaSiO3, was critical for the growth of the CNTs. This new catalyst is suggested to follow the similar roles of transition metals in the growth of CNTs by a molten state to absorb carbon and form CNTs after reaching saturation.

Original languageEnglish (US)
Pages (from-to)2666-2669
Number of pages4
Issue number7
StatePublished - Jun 2012

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science


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