低温固相合成纳米硫化镉的新方法

Preparation of nanoparticle CdS by solid state reaction at low temperature

以硫代乙酰胺（TAA）与氯化镉为原料，用低温固相反应合成纳米硫化镉。用X射线粉末衍射、透射电镜对所得产物进行表征。结果表明，低温固相法得到的纳米硫化镉为立方晶系结构，微粒平均粒径为15～25nm。出于比较研究的需要，用室温固相法和均匀沉淀法合成了形貌不同的纳米硫化镉。本法产物的粒径分布比室温固相法均匀，而形貌尺寸明显大于均匀沉淀法。

Using CdCl2 · 2.5H2O and CH3CSNH2 as raw materials, the nanoparticle CdS was prepared by solid state reaction and the product was characterized by XRD and TEM. The CdS nanoparticle obtained is cubic crystal structure with average size of 15 -25 nm. Compared to the product made by solid state method at room temperature and by homogeneous precipitation method,the size distribution of this product made by solid state reaction at low temperature is more uniform than that of the product made by solid state at room temperature, while the shape and size of this product is larger than that of the product made by homogeneous precipitation method.