Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst

Khavharendwe M. Rambau, Nicholas M. Musyoka, Ncholu Manyala, Jianwei Ren, Henrietta W. Langmi, Mkhulu K. Mathe

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


In this study, two waste materials namely; coal fly ash (CFA) and waste tyres pyrolysis oil, were successfuly utilized in the synthesis of carbon nanofibers/tubes (CNF/Ts). In addition, Fe-rich CFA magnetic fraction (Mag-CFA) and ethylene gas were also used for comparison purposes. The carbons obtained from CFA were found to be anchored on the surface of the cenosphere and consisted of both CNTs and CNFs, whereas those obtained from Mag-CFA consisted of only multi-walled carbon nanotubes (MWCNTs). The study further showed that the type of carbon precursor and support material played an important role in determining the nanocarbon growth mechanism. The findings from this research have demonstrated that it is possible to utilize waste tyres pyrolysis oil vapor as a substitute for some expensive commercial carbonaceous gases.

Original languageEnglish
Pages (from-to)1115-1122
Number of pages8
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Issue number12
Publication statusPublished - 15 Oct 2018
Externally publishedYes


  • Carbon nanofibers/tubes
  • multiwalled carbon nanotubes
  • pyrolysis oil vapor
  • waste tyres

ASJC Scopus subject areas

  • Environmental Engineering


Dive into the research topics of 'Preparation of carbon nanofibers/tubes using waste tyres pyrolysis oil and coal fly ash derived catalyst'. Together they form a unique fingerprint.

Cite this