Robust scalable synthesis of surfactant-free thermoelectric metal chalcogenide nanostructures
Robust scalable synthesis of surfactant-free thermoelectric metal chalcogenide nanostructures
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DOI：
10.1016/j.nanoen.2015.04.024
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发表时间：
2015-07-01
期刊：
影响因子：
17.6
通讯作者：
Dou, Shi Xue
中科院分区：
文献类型：
--
作者：
Han, Chao;Li, Zhen;Dou, Shi Xue
本工作开发了一种用于可规模化合成无表面活性剂的纳米结构金属硫属化物（MaX B，M=Cu、Ag、Sn、Pb和Bi; X=S、Se和Te; a=1或2;且B= 1或3）的稳健的低成本环境水溶液方法。反应参数，如前体浓度，前体的比例，和还原剂的量，对所得纳米结构的组成，尺寸和形状的影响进行了全面的研究。这种环境友好的方法能够在一锅反应中大规模地生产金属硫属化物纳米结构，研究了它们将废热转化为电能的热电性能。结果表明，这些金属硫属化物纳米结构的热电性能强烈依赖于金属硫属化物的类型，并且它们的品质因数与先前报道的用于它们的块体或纳米结构的对应物的数字相当。(C)2015爱思唯尔有限公司版权所有。
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.