表面修饰SnS_(2)纳米粒子的合成及结构表征

Synthesis and characterization of surface modified SnS_2 nanoparticles

利用表面修饰法合成了双十六烷基二硫代磷酸 (DDP)修饰的SnS2 纳米粒子 ,并用红外光谱(IR)、X -射线光电子能谱 (XPS)和透射电子显微镜 (TEM)等仪器对产物的结构、尺寸、形状及化学状态进行了研究 .结果表明 :表面修饰剂与纳米粒子表面之间发生化学键合作用 ,这使得SnS2 纳米粒子的油溶性得以明显改善 ,而且有效地阻止了纳米粒子之间的团聚现象 ,因而所合成的SnS2 纳米粒子大小均匀 ,粒径约为 7nm .

Surface modified SnS 2 nanoparticles are synthesized in mixed solvent of ethanol water by the reaction of SnCl 4, Na 2S and surface modification agent dialkyldithiophosphate(DDP). Infrared spectroscopy(IR), X ray photoelectron spectroscopy(XPS) and transmission electron microscopy(TEM) are used to investigate the structure, size, and morphology of the modified SnS 2 nanoparticles. The results show that the average diameter of the coated SnS 2 nanoparticles is about 7nm, and the dispersion capacity could be improved effectively by surface modification with DDP.