Bendt Georg, Weber Anna, Heimann Stefan, Assenmacher Wilfried, Prymak Oleg, Schulz Stephan
Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany.
Dalton Trans. 2015 Aug 28;44(32):14272-80. doi: 10.1039/c5dt02072g.
Thermolysis of the single source precursor (Et2Bi)2Te in DIPB at 80 °C yielded phase-pure Bi4Te3 nanoparticles, while mixtures of Bi4Te3 and elemental Bi were formed at higher temperatures. In contrast, cubic Bi2Te particles were obtained by thermal decomposition of Et2BiTeEt in DIPB. Moreover, a dual source approach (hot injection method) using the reaction of Te(SiEt3)2 and Bi(NMe2)3 was applied for the synthesis of different pure Bi-Te phases including Bi2Te, Bi4Te3 and Bi2Te3, which were characterized by PXRD, REM, TEM and EDX. The influence of reaction temperature, precursor molar ratio and thermolysis conditions on the resulting material phase was verified. Moreover, reactions of alternate bismuth precursors such as Bi(NEt2)3, Bi(NMeEt)3 and BiCl3 with Te(SiEt3)2 were investigated.
在80℃下于二异丁基苯（DIPB）中对单源前驱体（Et2Bi）2Te进行热解，得到了纯相的Bi4Te3纳米颗粒，而在较高温度下则形成了Bi4Te3与元素铋的混合物。相比之下，通过在DIPB中对Et2BiTeEt进行热分解获得了立方相Bi2Te颗粒。此外，采用双源法（热注射法），利用Te(SiEt3)2与Bi(NMe2)3的反应合成了包括Bi2Te、Bi4Te3和Bi2Te3在内的不同纯Bi-Te相，并用粉末X射线衍射（PXRD）、扫描电子显微镜（REM）、透射电子显微镜（TEM）和能谱仪（EDX）对其进行了表征。验证了反应温度、前驱体摩尔比和热解条件对所得材料相的影响。此外，还研究了交替的铋前驱体如Bi(NEt2)3、Bi(NMeEt)3和BiCl3与Te(SiEt3)2的反应。
