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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