Journal
NANO ENERGY
Volume 15, Issue -, Pages 193-204Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2015.04.024
Keywords
Ambient synthesis; Metal chalcogenides; Nanostructures; Thermoelectric; Surfactant free
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Funding
- Chinese Scholarship Council (CSC)
- Australian Research Council (ARC) [DP130102699, DP130102274]
- Baosteel-Australia Research Centre (BARC) [BA110011]
- ARC [LP120200289]
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A robust low-cost ambient aqueous method for the scalable synthesis of surfactant-free nanostructured metal chalcogenides (MaXb, M=Cu, Ag, Sn, Pb, and Bi; X=S, Se, and Te; a=1 or 2; and b= 1 or 3) is developed in this work. The effects of reaction parameters, such as precursor concentration, ratio of precursors, and amount of reducing agent, on the composition, size, and shape of the resultant nanostructures have been comprehensively investigated. This environmentally friendly approach is capable of producing metal chalcogenide nanostructures in a one-pot reaction on a large scale, which were investigated for their thermoelectric properties towards conversion of waste heat into electricity. The results demonstrate that the thermoelectric properties of these metal chalcogenide nanostructures are strongly dependent on the types of metal chalcogenides, and their figure of merits are comparable with previously reported figures for their bulk or nanostructured counterparts. (C) 2015 Elsevier Ltd. All rights reserved.
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