Coated carbon nanotubes
coated with Me
The
chemical inertness, the large specific surface area and the hydrophobic
character of surface of carbon nanotubes comparing with traditional activated
charcoal allows to use them as a new class of catalyst supports or adsorbents
for storage of small particles or molecules. Those properties suggest enormous potential
applications of CNTs as novel materials for the catalyst carrier (nano-scaled
hybrid materials).
Catalyst metals as Cu, Pt,
Pd, Ru supported on multi-walled carbon nanotubes should show excellent
activity for e.g. some hydrogenation reactions.
By using the aerosol-
technique for the injection of starting materials into the CVD- reactor, we
investigate the synthesis of MWNTs supported with homogenous catalyst particle
deposition. For this we chose 2 different deposition procedures, the one step
method (in situ deposition of tube and catalyst particles) and the two step
technique with a step by step deposition of both materials.
Activities: Coated with Pt-nanoparticles using the aerosol-technique
solvent: m-xylene; catalyst: ferrocene; temperature: 850°
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Activities: Coated with Cu by using the MOCVD-method
Cu on MWNTs; using trimethylsilyl-hexafluoroacetylacetonate-Cu(II); thermal and plasma enhanced treatments (100-500°C) in different gas mixture; after a partial covering of the nanotube outer shells can be reached
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For more information don't hesitate to contact.
Contact:
Dr. Albrecht Leonhardt
'Chemical Vapor Deposition'
Institute for Solid State Research (IFF)
IFW Dresden
D-01171 Dresden, Germany
Phone: +49-351-4659-299
Fax: +49-351-4659-440
Email: a.leonhardt@ifw-dresden.de