Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach

Georg Bendt; Anna Weber; Stefan Heimann; Wilfried Assenmacher; Oleg Prymak; Stephan Schulz

doi:10.1039/C5DT02072G

Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach†

Georg Bendt,^a Anna Weber,^a Stefan Heimann,^a Wilfried Assenmacher,^b Oleg Prymak^a and Stephan Schulz*^a

* Corresponding authors

^a Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
E-mail: stephan.schulz@uni-due.de
Fax: +44 0201 1833830
Tel: +44 0201 1834635

^b Institute of Inorganic Chemistry, University of Bonn, Römerstr. 164, D-53117 Bonn, Germany

Abstract

Thermolysis of the single source precursor (Et₂Bi)₂Te 1 in DIPB at 80 °C yielded phase-pure Bi₄Te₃ nanoparticles, while mixtures of Bi₄Te₃ and elemental Bi were formed at higher temperatures. In contrast, cubic Bi₂Te particles were obtained by thermal decomposition of Et₂BiTeEt 2 in DIPB. Moreover, a dual source approach (hot injection method) using the reaction of Te(SiEt₃)₂ and Bi(NMe₂)₃ was applied for the synthesis of different pure Bi–Te phases including Bi₂Te, Bi₄Te₃ and Bi₂Te₃, which were characterized by PXRD, REM, TEM and EDX. The influence of reaction temperature, precursor molar ratio and thermolysis conditions on the resulting material phase was verified. Moreover, reactions of alternate bismuth precursors such as Bi(NEt₂)₃, Bi(NMeEt)₃ and BiCl₃ with Te(SiEt₃)₂ were investigated.

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DOI: https://doi.org/10.1039/C5DT02072G
Article type: Paper
Submitted: 01 Jun 2015
Accepted: 15 Jul 2015
First published: 15 Jul 2015
This article is Open Access

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Dalton Trans., 2015,44, 14272-14280

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Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach

G. Bendt, A. Weber, S. Heimann, W. Assenmacher, O. Prymak and S. Schulz, Dalton Trans., 2015, 44, 14272 DOI: 10.1039/C5DT02072G

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Dalton Transactions

Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach†

Abstract

Supplementary files

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Wet-chemical synthesis of different bismuth telluride nanoparticles using metal organic precursors – single source vs. dual source approach

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