State Key Laboratory of Chemical Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China.
Inorg Chem. 2011 Aug 15;50(16):7729-34. doi: 10.1021/ic201332n. Epub 2011 Jul 20.
High-quality Bi(2)S(3) discrete single-crystal nanosheets with orthorhombic structure have been synthesized through the thermal decomposition of a single-source precursor, Bi(S(2)CNEt(2))(3), in amine media. The morphology evolution reveals that the Bi(2)S(3) nanosheets are developed through the assembly of nanorods, and an attachment-recrystallization growth mechanism is proposed for the formation of nanosheets with the use of nanorods as building blocks. High-resolution transmission electron microscopy studies reveal that the nanosheets have the largest exposed surface of (100) facets. The effects of experimental variables, such as the reaction temperature, time, precursor concentration, and media, on the morphology of the obtained nanocrystals have been systematically investigated in which the amine has served as the solvent, surfactant, and electron donor.
通过在胺介质中热分解单源前驱体 Bi(S(2)CNEt(2))(3)，合成了具有正交结构的高质量 Bi(2)S(3)离散单晶纳米片。形貌演变表明，Bi(2)S(3)纳米片是通过纳米棒的组装而发展起来的，并且提出了一种附着-再结晶生长机制，利用纳米棒作为构建块来形成具有纳米片的结构。高分辨率透射电子显微镜研究表明，纳米片具有最大暴露的 (100) 面。系统研究了实验变量，如反应温度、时间、前驱体浓度和介质，对所得纳米晶体形貌的影响，其中胺既是溶剂、表面活性剂又是电子供体。
