NDLI: Research on annealing temperature in the process of MoS/sub 2/ nanostructure synthesis from nanoscale powder

Content Provider	IEEE Xplore Digital Library
Author	Berdinsky, A.S. Chadderton, L.T. Gutakovsky, A.K. Mazalov, L.N. Fedorov, V.E. Fink, D.
Copyright Year	2002
Description	Author affiliation: Novosibirsk State Tech. Univ., Russia (Berdinsky, A.S.)
Abstract	To see the formation process of inorganic fullerene-like structures from MoS/sub 2/ the thermal annealing of superfine nanoscale MoS/sub 2/ powder was performed in neutral argon atmosphere. The grain size of MoS/sub 2/ powder is about 3 nm. The annealing temperature varied in the range of 500/spl deg/C-1000/spl deg/C, and the annealing time varied between 4 hours and 5 minutes for low and high annealing temperatures, respectively. PXRD and TEM analyses were made to observe the change of the character of the crystallization process and of the curvature of [002] MoS/sub 2/ planes. The rise of the annealing temperature leads to an increase of the crystalline phase and a simultaneous decrease of the amorphous phase in the MoS/sub 2/ powder. The sample annealed at T/sub ann/=500/spl deg/C reveals a weak curvature of the [002] planes, and the grains become larger as compared with the pristine MoS/sub 2/ powder. Increasing the annealing temperature up to T/sub ann/=700/spl deg/C leads to a stronger curvature of the [002] planes. The character of the curved planes varies from quite large planes with a large curvature radius up to U-shaped and rectangularly shaped structures. An increase of the annealing temperature up to T/sub ann/=1000/spl deg/C, finally, leads to a pronounced crystallization of the powder, with some part being left over in an amorphous phase.
Starting Page	402
Ending Page	405
File Size	344494
Page Count	4
File Format	PDF
ISBN	0780374274
DOI	10.1109/KORUS.2002.1028050
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-24
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Annealing Powders Crystallization Amorphous materials Temperature distribution Nanotubes X-ray scattering Physics Chemistry Argon
Content Type	Text
Resource Type	Article

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