In order to solve such problems as difficult recycling,high cost and hard industrialization realization for the used organic solvent in the preparation process of CdS (CdSe) semiconductor nanoparticles,the CdS and CdSe nanoparticles were prepared by taking the sodium oleate as stabilizer,ethanol as solvent as well as cadmium acetate and thiourea (or NaHSe) as precursors,respectively.The optical properties,crystalline structures,morphologies and dimensions for both CdS and CdSe nanoparticles were characterized with such methods as UV-VIS absorption spectrum,fluorescence spectrum,wide angle x-ray diffraction (WAXD)and transimmision electron spectroscopy (TEM).The results show that with taking the sodium oleate as stabilizer and ethanol as solvent,the CdS and CdSe nanoparticles with homogeneous dimension distribution can be obtained in moderate reaction condition through controlling certain precursor concentration,reaction temperature and reaction time.Therefore,a new way for the synthesis of CdS and CdSe seimconductor nanoparticles in environment-friendly condition can be provided.%针对CdS (CdSe)等半导体纳米粒子制备过程中使用的有机溶剂难回收、成本高、难以实现工业化等问题,以油酸钠为稳定剂,乙醇为溶剂,乙酸镉和硫脲(或硒氢化钠)为前驱物,制备了CdS和CdSe纳米粒子.采用紫外-可见吸收光谱、荧光光谱、广角x-射线衍射和透射电子显微分析等方法,对CdS和CdSe纳米粒子的光学性质、晶体结构、形貌及尺寸等进行了表征.结果表明,当以油酸钠为稳定剂,乙醇为溶剂时,通过控制一定的前驱物浓度、反应温度和反应时间,在温和的反应条件下,可以得到尺寸分布均匀的CdS和CdSe纳米粒子,从而为在环境友好条件下合成CdS和CdSe半导体纳米粒子提供了一种新途径.
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