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

Large-Scale Surfactant-Free Synthesis of p-Type SnTe Nanoparticles for Thermoelectric Applications.
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DOI:
10.3390/ma10030233
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发表时间:
2017-02-26
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Gregory DH
Gregory DH
中科院分区:
其他
文献类型:
--
作者:
Han G;Zhang R;Popuri SR;Greer HF;Reece MJ;Bos JG;Zhou W;Knox AR;Gregory DH

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我们开发了一种简便的一锅水溶液法,用于快速、直接地合成每批超过 10 克的 SnTe 纳米颗粒。该合成涉及将碱性 Na2SnO2 溶液和 NaHTe 溶液短时间沸腾,其中 NaOH 浓度和反应持续时间分别在控制相纯度和粒径方面发挥着至关重要的作用。 SnTe 纳米粒子的放电等离子体烧结可产生纳米结构的压块,其热电性能可与通过更耗时和耗能的方法合成的块体对应物相媲美。这种方法将节能、无表面活性剂的溶液合成与放电等离子烧结相结合,为 p 型 SnTe 纳米结构材料提供了一种简单、快速且廉价的途径。
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.
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