Effect of benzophenone on the physicochemical properties of N-CNTs synthesized from 1-ferrocenylmethyl (2-methylimidazole) catalyst

https://doi.org/10.46481/jnsps.2020.105

Authors

  • Ayomide Labulo Department of Chemistry, Federal University of Lafia, Lafia, Nasarawa State, Nigeria
  • Elijah Temitope Adesuji Department of Chemistry, Federal University of Lafia, Lafia, Nasarawa State, Nigeria
  • Charles Ojiefoh Oseghale Department of Chemistry, Federal University of Lafia, Lafia, Nasarawa State, Nigeria
  • Elias Emeka Elemike Department of Chemistry, Federal University of Petroleum, Nigeria
  • Adamu Usman
  • Akinola Kehinde Akinola Department of Chemistry Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • Enock Olugbenga Dare Department of Chemistry Federal University of Agriculture, Abeokuta, Ogun State, Nigeria

Keywords:

Chemical vapour deposition, nitrogen-doped carbon nanotubes, 1-ferrocenylmethyl(2-methylimidazole), X-ray photoelectron spectroscopy

Abstract

Vertically-aligned nitrogen-doped carbon nanotubes (v-N-CNTs) were synthesized \textit{via} the chemical vapour deposition (CVD) technique. 1-ferrocenylmethyl(2-methylimidazole) was employed as the source of the Fe catalyst and was dissolved in different ratios of acetonitrile/benzophenone feedstock which served as both the carbon, nitrogen, and oxygen sources. The morphological difference in N-CNTs was as a result of increased oxygen concentration in the reaction mix and not due to water vapour formation as observed in the oxygen-free experiment, indicating specifically, the impact of oxygen. Raman and X-ray photoelectron spectroscopy (XPS) revealed surface defects and grafting of oxygen functional groups on the sidewall of N-CNTs. The FTIR data showed little or no effect as oxygen concentration increases. XPS analysis detected the type of nitrogen species (\textit{i.e.} pyridinic, pyrrolic, graphitic, or molecular nitrogen forms) incorporated in the N-CNT samples. Pyrrolic nitrogen was dominant and increased (from 8.6 to 11.8 at.\%) as oxygen concentration increases in the reaction precursor. An increase in N content was observed with the introduction of a lower concentration of oxygen, followed by a gradual decrease at higher oxygen concentration. Our result suggested that effective control of the reactant mixtures can manipulate the morphology of N-CNTs.

Dimensions

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Published

2020-11-15

How to Cite

Labulo, A., Adesuji, E. T. ., Oseghale, C. O. ., Elias Emeka Elemike, Adamu Usman, Akinola Kehinde Akinola, & Enock Olugbenga Dare. (2020). Effect of benzophenone on the physicochemical properties of N-CNTs synthesized from 1-ferrocenylmethyl (2-methylimidazole) catalyst. Journal of the Nigerian Society of Physical Sciences, 2(4), 205–217. https://doi.org/10.46481/jnsps.2020.105

Issue

Volume 2, Issue 4, November 2020

Section

Original Research
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