Chemical synthesis of anisotropic nanocrystalline Sb 2 Te 3 and low thermal conductivity of the compacted dense bulk

Wenzhong Wang, Xiao Yan, Bed Poudel, Yi Ma, Qing Hao, Jian Yang, Gang Chen, Zhifeng Ren

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We describe a one-step, one-pot non-aqueous route for the synthesis of Sb 2 Te 3 nanocrystals with hexagonal shape and highly anisotropic nanostructures. The as-prepared nanostructures were characterized by XRD, TEM and HRTEM. The effect of the stabilizers on the nanocrystal morphology has been discussed in detail. We have studied the thermal conductivity of the compacted bulk from the Sb 2 Te 3 nanostructures. The results indicated that a very low thermal conductivity of about 1 W/mK at 300 K, comparing to 4.7 W/mK of the polycrystalline bulk, was achieved. The results indicated that nanostructured Sb 2 Te 3 is potentially a good candidate for engineered nanocomposites that can lead to high thermoelectric figure-of-merit.

Original languageEnglish (US)
Pages (from-to)452-456
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2008

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Thermal Conductivity
Nanostructures
Nanoparticles
Nanocomposites

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Wang, Wenzhong ; Yan, Xiao ; Poudel, Bed ; Ma, Yi ; Hao, Qing ; Yang, Jian ; Chen, Gang ; Ren, Zhifeng. / Chemical synthesis of anisotropic nanocrystalline Sb 2 Te 3 and low thermal conductivity of the compacted dense bulk In: Journal of Nanoscience and Nanotechnology. 2008 ; Vol. 8, No. 1. pp. 452-456.
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Chemical synthesis of anisotropic nanocrystalline Sb 2 Te 3 and low thermal conductivity of the compacted dense bulk . / Wang, Wenzhong; Yan, Xiao; Poudel, Bed; Ma, Yi; Hao, Qing; Yang, Jian; Chen, Gang; Ren, Zhifeng.

In: Journal of Nanoscience and Nanotechnology, Vol. 8, No. 1, 01.01.2008, p. 452-456.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Wang, Wenzhong

AU - Yan, Xiao

AU - Poudel, Bed

AU - Ma, Yi

AU - Hao, Qing

AU - Yang, Jian

AU - Chen, Gang

AU - Ren, Zhifeng

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AB - We describe a one-step, one-pot non-aqueous route for the synthesis of Sb 2 Te 3 nanocrystals with hexagonal shape and highly anisotropic nanostructures. The as-prepared nanostructures were characterized by XRD, TEM and HRTEM. The effect of the stabilizers on the nanocrystal morphology has been discussed in detail. We have studied the thermal conductivity of the compacted bulk from the Sb 2 Te 3 nanostructures. The results indicated that a very low thermal conductivity of about 1 W/mK at 300 K, comparing to 4.7 W/mK of the polycrystalline bulk, was achieved. The results indicated that nanostructured Sb 2 Te 3 is potentially a good candidate for engineered nanocomposites that can lead to high thermoelectric figure-of-merit.

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