Comparison of the structural configuration of cobalt nanoparticles on titania and titania nanotube supports

A. S. Afolabi, A. S. Abdulkareem, E. Muzenda

Research output: Contribution to journalArticle

Abstract

In this study, two cobalt based catalyst samples were prepared on titania and titania nanotubes supports using the deposition precipitation method. Their structural configurations were characterized and compared using BET, and TRP analyses. The BET analysis showed that the surface area of TiO 2 is much higher than that of TNT which was due to their structural differences. Analyses of the results obtained revealed that the surface area of the 10 % Co/TNT catalyst sample is higher than that of the 10 % Co/TiO 2. The TPR analysis showed that it is much easier to reduce 10 % Co/TiO 2, than 10 % Co/TNT. This is attributed to be due to the fact that the cobalt particles were adsorbed on the surface of the TiO 2, and formed covalent bonds with TNT. Therefore reduction temperature was higher with TNT than TiO 2. The investigation of structural changes of these catalysts when they were coated with carbon, using chemical vapour deposition method was also conducted. The catalyst prepared on TNT support showed better properties in terms of average pore diameter, pore volume and surface area than the catalyst sample prepared on TiO 2 support when the two samples were exposed to carbon environment for the same period of time.

Original languageEnglish
Article number01005
Pages (from-to)1-5
Number of pages5
JournalJournal of Nano- and Electronic Physics
Volume4
Issue number1
Publication statusPublished - 2012

Fingerprint

Trinitrotoluene
trinitrotoluene
Cobalt
Catalyst supports
Nanotubes
nanotubes
cobalt
titanium
Titanium
Nanoparticles
nanoparticles
Catalysts
catalysts
configurations
Carbon
Covalent bonds
porosity
carbon
covalent bonds
Chemical vapor deposition

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Radiation
  • Materials Science(all)

Cite this

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title = "Comparison of the structural configuration of cobalt nanoparticles on titania and titania nanotube supports",
abstract = "In this study, two cobalt based catalyst samples were prepared on titania and titania nanotubes supports using the deposition precipitation method. Their structural configurations were characterized and compared using BET, and TRP analyses. The BET analysis showed that the surface area of TiO 2 is much higher than that of TNT which was due to their structural differences. Analyses of the results obtained revealed that the surface area of the 10 {\%} Co/TNT catalyst sample is higher than that of the 10 {\%} Co/TiO 2. The TPR analysis showed that it is much easier to reduce 10 {\%} Co/TiO 2, than 10 {\%} Co/TNT. This is attributed to be due to the fact that the cobalt particles were adsorbed on the surface of the TiO 2, and formed covalent bonds with TNT. Therefore reduction temperature was higher with TNT than TiO 2. The investigation of structural changes of these catalysts when they were coated with carbon, using chemical vapour deposition method was also conducted. The catalyst prepared on TNT support showed better properties in terms of average pore diameter, pore volume and surface area than the catalyst sample prepared on TiO 2 support when the two samples were exposed to carbon environment for the same period of time.",
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Comparison of the structural configuration of cobalt nanoparticles on titania and titania nanotube supports. / Afolabi, A. S.; Abdulkareem, A. S.; Muzenda, E.

In: Journal of Nano- and Electronic Physics, Vol. 4, No. 1, 01005, 2012, p. 1-5.

Research output: Contribution to journalArticle

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