Journal of Materials Science

, Volume 44, Issue 24, pp 6563–6570 | Cite as

Confined palladium colloids in mesoporous frameworks for carbon nanotube growth

  • Angel Berenguer-Murcia
  • Evgeny V. Rebrov
  • Maciej Cabaj
  • Andrew E. H. Wheatley
  • Brian F. G. Johnson
  • John Robertson
  • Jaap C. SchoutenEmail author
Mesostructured Materials


Palladium colloidal nanoparticles with an average size of approximately 2.4 nm have been incorporated into mesoporous inorganic thin films following a multistep approach. This involves the deposition of mesoporous titania thin films with a thickness of 200 nm by spin-coating on titanium plates with a superhydrophilic titania outer layer and activation by calcination in a vacuum furnace at 573 K. Nanoparticles have been confined within the porous titania network by dip-coating noble metal suspensions onto these mesoporous thin films. Finally, the resulting nanoconfined systems were used as substrates for the growth of oriented carbon nanotubes (CNTs) using plasma-enhanced chemical vapour deposition at 923 K in order to enhance their surface area. These CNTs were tested in the hydrogenation of phenylacetylene by hydrogen in a batch reactor. The initial reaction rate observed on a CNT/TiO2 structured catalyst was considerably higher than that on 1 wt% Pd/TiO2 thin films.


TiO2 Thin Film Phenylacetylene Titanium Substrate Titania Film Mesoporous TiO2 



The authors would like to acknowledge the European Commission (NOE EXCELL NMP3-CT-2005-515703), the British Research Council, and Netherlands Organisation for Scientific Research (NWO) (Projects PPS-888 and PPS-894) for financial support. The authors would also like to acknowledge MSc. Lidia Protasova for her kind help with the ethanol adsorption isotherms analysis.

Open Access

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2009

Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (, which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • Angel Berenguer-Murcia
    • 1
  • Evgeny V. Rebrov
    • 2
  • Maciej Cabaj
    • 1
  • Andrew E. H. Wheatley
    • 1
  • Brian F. G. Johnson
    • 1
  • John Robertson
    • 3
  • Jaap C. Schouten
    • 2
    Email author
  1. 1.Department of ChemistryUniversity of CambridgeCambridgeUK
  2. 2.Department of Chemical Engineering and ChemistryEindhoven University of TechnologyEindhovenThe Netherlands
  3. 3.Department of EngineeringUniversity of CambridgeCambridgeUK

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