Schaumann Julian, Loor Manuel, Ünal Derya, Mudring Anja, Heimann Stefan, Hagemann Ulrich, Schulz Stephan, Maculewicz Franziska, Schierning Gabi
Inorganic Chemistry III - Materials Synthesis and Characterization, Ruhr-Universität Bochum, DE-44801, Bochum, Germany.
Faculty of Chemistry and Center for NanoIntegration (CENIDE), University of Duisburg-Essen, DE-45117 Essen, Germany.
Dalton Trans. 2017 Jan 17;46(3):656-668. doi: 10.1039/c6dt04323b.
A systematic study on the microwave-assisted thermolysis of the single source precursor (EtSb)Te (1) in different asymmetric 1-alkyl-3-methylimidazolium- and symmetric 1,3-dialkylimidazolium-based ionic liquids (ILs) reveals the distinctive role of both the anion and the cation in tuning the morphology and microstructure of the resulting SbTe nanoparticles as evidenced by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS). A comparison of the electrical and thermal conductivities as well as the Seebeck coefficient of the SbTe nanoparticles obtained from different ILs reveals the strong influence of the specific IL, from which CmimI was identified as the best solvent, on the thermoelectric properties of as-prepared nanosized SbTe. This work provides design guidelines for ILs, which allow the synthesis of nanostructured thermoelectrics with improved performances.
对单源前驱体(EtSb)Te(1)在不同的不对称1-烷基-3-甲基咪唑鎓和对称1,3-二烷基咪唑鎓基离子液体(ILs)中进行微波辅助热解的系统研究表明，通过X射线衍射(XRD)、扫描电子显微镜(SEM)、能量色散X射线分析(EDX)和X射线光电子能谱(XPS)证明，阴离子和阳离子在调节所得SbTe纳米颗粒的形态和微观结构方面都具有独特作用。对从不同离子液体中获得的SbTe纳米颗粒的电导率、热导率以及塞贝克系数进行比较，结果表明特定的离子液体（其中CmimI被确定为最佳溶剂）对所制备的纳米级SbTe的热电性能有很大影响。这项工作为离子液体提供了设计指导方针，从而能够合成具有改进性能的纳米结构热电材料。
