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Crystal Growth Studies During Aerosol Synthesis of Nanostructured Fullerene Particles

Published online by Cambridge University Press:  10 February 2011

J. Joutsensaari ,
E.I. Kauppinen ,
D. Bernaerts  and
G. Van Tendeloo
J. Joutsensaari
Affiliation:
VTT Chemical Technology, Aerosol Technology Group, P.O.Box 1401, FIN-02044 VTT, Finland, Jorma.Joutsensaari@vtt.fi
E.I. Kauppinen
Affiliation:
EMAT, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium
D. Bernaerts
Affiliation:
EMAT, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium
G. Van Tendeloo
Affiliation:
EMAT, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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Abstract

We have studied crystal growth during aerosol synthesis of nanostructured C60, C70 and mixed fullerene particles. Fullerene particles have been produced by aerosol droplet drying and crystallization as well as via vapor condensation starting from solutions of fullerenes in toluene. Morphology, crystallinity and crystal structure of fullerene particles produced in various processing temperatures were studied by scanning and transmission electron microscopy. The results show that both highly disordered and single crystal particles with a size of about 100 nm are formed at reactor operating temperatures of 500 °C and above. The ultrafine particles formed via vapor condensation are mostly polycrystalline. Many of crystalline particles have perfectly faceted morphology, i.e., hexagonal plate-like, decahedral and icosahedral shapes. The plate-like particles are lamellar-twinned and the decahedral and icosahedral particles are multiply twinned. Crystallite formation and growth mechanisms of the particles are discussed. In addition, electron diffraction results show that fullerene alloys with fcc structure can be produced via aerosol synthesis methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 520: Symposium P – Nanostructured Powders & Their Industrial Application , 1998 , 63
Copyright
Copyright © Materials Research Society 1998

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