Synthesis of 3-D hierarchical dendrites of lead chalcogenides in large scale via microwave-assistant method
Synthesis of 3-D hierarchical dendrites of lead chalcogenides in large scale via microwave-assistant method
复制标题
微波辅助法大规模合成铅硫族化物3D分级枝晶
DOI：
10.1021/cg060415h
复制
发表时间：
2007-02-01
影响因子：
3.8
通讯作者：
Zhu, Zikang
中科院分区：
文献类型：
--
作者：
Cao, Hongliang;Gong, Qiang;Zhu, Zikang
采用微波辅助方法制备了PbS、PbSe和PbTe三种铅硫族化合物的分级超结构。FESEM和HRTEM图像显示，树枝状和六臂PbS超结构由从PbS骨架外延生长的棱柱状分支构成。详细的实验表明，通过调节反应条件（前驱体或硫源的初始浓度），可以简单地制备出不同形貌的PbS微晶（立方体、六豆荚、喇叭状枝晶和六臂枝晶）。结果表明，三维分级结构的形成受动力学条件控制。此外，我们还采用类似的方法，在适当的还原剂的辅助下制备了PbSe和PbTe的枝晶。
Hierarchical superstructures of lead chalcogenides (PbS, PbSe, and PbTe) have been fabricated in large scale via microwave-assistant method. The FESEM and HRTEM images showed that dendritic and six-armed PbS superstructures were constructed with prism-shaped branches which grew epitaxially from the backbone of PbS. Detailed experiments revealed that PbS microcrystals with different morphologies (cubes, six-pods, bugle-like dendrites, and six-armed dendrites) could be simply fabricated by adjusting the reaction conditions (initial concentration of precursors or sulfur source). The results implied that the formation of 3-D hierarchical structures was controlled by the kinetic conditions. In addition, the dendrites of PbSe and PbTe have also been fabricated by the assistance of appropriate reductive reagent in a similar method.