NDLI: Synthesis and Characterization of nanoscale Bi2Te3, Sb2Te3, PbTe and Ag2Te powders: activated Metals and soluble Tellurium sources as synthetic Tools

Content Provider	IEEE Xplore Digital Library
Author	Schlecht, S. Yosef, M. Weimer, S.
Copyright Year	2006
Description	Author affiliation: Inst. for Chem. & Biochem., Freie Univ. Berlin (Schlecht, S.; Yosef, M.)
Abstract	Binary tellurides such as PbTe or $Bi_{2}Te_{3}$ represent one of the fundamental classes of thermoelectrics. Thus, the development of new routes for the preparation of these compounds as nanoscale powders is an important challenge. In this context, we investigated the use of activated metals and soluble tellurium sources such as diphenyltelluride or the tellurolates of hard transition metal cations as versatile tool box system for the synthesis of these powders. Using solvochemically activated lead, bismuth or antimony, their respective tellurides PbTe, $Bi_{2}Te_{3}$ and Sb2 $}Te_{3}$ could be obtained in a reaction with $Ph_{2}Te_{2}$ following the same experimental protocol in all cases. The preparation of an $Ag_{2}Te$ nanopowder required a different synthetic approach as elemental silver does not react with Ph $_{2}Te_{2}.$ Following the principle of hard and soft acids and bases, silver acetate and zinc tellurolate $Zn(TePh)_{2}middotTMEDA$ [Jun, Y, 2001] were reacted to form nanoparticles of $Ag_{2}Te$ from intermediately formed silver tellurolate
Starting Page	646
Ending Page	648
File Size	365265
Page Count	3
File Format	PDF
ISBN	1424408105
ISSN	10942734
DOI	10.1109/ICT.2006.331224
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-06
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Powders Tellurium Silver Nanoparticles Diffraction Thermoelectricity Bismuth Zinc Lead compounds Crystallization
Content Type	Text
Resource Type	Article

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