Growth of bismuth sulfide nanowire using bismuth trisxanthate single source precursors
Growth of bismuth sulfide nanowire using bismuth trisxanthate single source precursors
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DOI：
10.1021/cm021813k
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发表时间：
2003-12-02
影响因子：
8.6
通讯作者：
Loh, KP
中科院分区：
文献类型：
--
作者：
Koh, YW;Lai, CS;Loh, KP
从三黄药铋前驱体和相关的二硫代氨基甲酸铋物种在197℃的乙二醇中的溶剂热分析中获得了结晶的Bi2S3纳米棒、纳米带和纳米晶。具有不同结构基元的前驱体被设计成具有不同热分解温度的化合物，即当R=甲基和乙基时，二聚体结构的铋(S2COR)(3)的分解温度低于采用聚合物结构的先驱体，因此前者的溶剂热分解产生了短的纳米晶，而后者则生成了长的纳米纤维。在硅衬底上化学气相沉积得到了几乎所有前驱体的长度和直径都不同的定义良好的纳米棒。用高分辨电子显微镜研究了纳米棒的内部结构。
Crystalline Bi2S3 nanorods, nanotapes, and nanocrystals were obtained from the solvent thermalysis of bismuth trisxanthate precursors and related bismuth dithiocarbamate species in ethylene glycol at 197 degreesC. Precursors with different structural motifs were designed to produce compounds with different thermal decomposition temparatures, i.e., the dimeric motif of Bi(S2COR)(3) when R = methyl and ethyl was found to have a lower decomposition temperature compared to precursors adopting the polymeric structure, so that solvothermalysis of the former gave rise to short nanocrystals; while in the case of the latter, long nanofibers were produced instead. Chemical vapor deposition on silicon substrates yielded well-defined nanorods of various lengths and diameters for almost all precursors. Internal microstructure of the nanorods was studied by high-resolution transmission electron microscopy.