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Inorganic Fullerenes of MX2 (M=W,Mo;X=S,Se)

Published online by Cambridge University Press:  15 February 2011

R. Tenne ,
L. Margulis ,
Y. Feldman  and
M. Homyonfer
R. Tenne
Affiliation:
Department of Materials and Intefaces, Weizmann Institute, Rehovot 76100, Israel
L. Margulis
Affiliation:
Department of Materials and Intefaces, Weizmann Institute, Rehovot 76100, Israel
Y. Feldman
Affiliation:
Department of Materials and Intefaces, Weizmann Institute, Rehovot 76100, Israel
M. Homyonfer
Affiliation:
Department of Materials and Intefaces, Weizmann Institute, Rehovot 76100, Israel
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Abstract

The gas-phase reaction between MoO3-x and H2S in a reducing atmosphere and at elevated temperatures (800° to 950°C) has been used to synthesize large quantities of an almost pure nested inorganic fullerenes (IFs) phase of MoS2. A uniform IF phase with a relatively narrow size distribution was obtained. The x-ray spectra of the different samples show that as the average size of the IF decreases the van der Waals gap along the c axis increases, largely because of the strain involved in folding of the lamella. Large amount of quite uniform nanotubes were obtained under modified preparation conditions.

In the second part of this work MoS2 nested fullerenes were grown on Ti and Nb and Mo oxide substrates. In one set of conditions hollow nested fullerenes of MoS2 were collected on a titanium oxide matrix, and analyzed by local area energy dispersive analysis. Under different flow conditions of the reacting gasses nested fullerenes with endohedral metal oxides were obtained and analyzed by electron diffraction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 359: Symposium G – Science and Technology of Fullerene Materials , 1994 , 111
Copyright
Copyright © Materials Research Society 1995

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References

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