Wang Shu Fen, Gu Feng, Lü Meng Kai
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
Langmuir. 2006 Jan 3;22(1):398-401. doi: 10.1021/la0518647.
PbS hollow nanospheres with diameters of 80-250 nm have been synthesized by a surfactant-assisted sonochemical route. The nanostructures were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), (high-resolution) transmission electron microscopy [(HR)TEM], and scanning electron microscopy (SEM) images. Structural characterization indicates that shells of the hollow spheres are composed of PbS nanoparticles with diameters of about 12 nm. The formation of the hollow nanostructure was explained by a vesicle-template mechanism, in which sonication and surfactant play important roles. Furthermore, uniform silica layers were successfully coated onto the hollow spheres via a modified Stöber method to enhance their performance for promising applications.
通过表面活性剂辅助的声化学路线合成了直径为80 - 250纳米的硫化铅空心纳米球。通过X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、（高分辨率）透射电子显微镜[（HR）TEM]和扫描电子显微镜（SEM）图像对纳米结构进行了表征。结构表征表明，空心球的壳由直径约为12纳米的硫化铅纳米颗粒组成。空心纳米结构的形成通过囊泡模板机制进行了解释，其中超声处理和表面活性剂起着重要作用。此外，通过改进的斯托伯方法成功地在空心球上涂覆了均匀的二氧化硅层，以提高其在有前景的应用中的性能。
