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Materials 2017, 10(3), 233; doi:10.3390/ma10030233

Large-Scale Surfactant-Free Synthesis of p-Type SnTe Nanoparticles for Thermoelectric Applications

1
WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK
2
School of Engineering & Materials Science, Queen Mary University of London, London E1 4NS, UK
3
Institute of Chemical Sciences and Centre for Advanced Energy Storage and Recovery, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
4
EaStCHEM, School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16 9ST, UK
5
School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
*
Author to whom correspondence should be addressed.
Received: 29 January 2017 / Revised: 16 February 2017 / Accepted: 21 February 2017 / Published: 26 February 2017
(This article belongs to the Special Issue Advances in Thermoelectric Materials)
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Abstract

A facile one-pot aqueous solution method has been developed for the fast and straightforward synthesis of SnTe nanoparticles in more than ten gram quantities per batch. The synthesis involves boiling an alkaline Na2SnO2 solution and a NaHTe solution for short time scales, in which the NaOH concentration and reaction duration play vital roles in controlling the phase purity and particle size, respectively. Spark plasma sintering of the SnTe nanoparticles produces nanostructured compacts that have a comparable thermoelectric performance to bulk counterparts synthesised by more time- and energy-intensive methods. This approach, combining an energy-efficient, surfactant-free solution synthesis with spark plasma sintering, provides a simple, rapid, and inexpensive route to p-type SnTe nanostructured materials. View Full-Text
Keywords: tin telluride; synthesis; structure; thermoelectrics; nanomaterials tin telluride; synthesis; structure; thermoelectrics; nanomaterials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Han, G.; Zhang, R.; Popuri, S.R.; Greer, H.F.; Reece, M.J.; Bos, J.-W.G.; Zhou, W.; Knox, A.R.; Gregory, D.H. Large-Scale Surfactant-Free Synthesis of p-Type SnTe Nanoparticles for Thermoelectric Applications. Materials 2017, 10, 233.

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